JP7293695B2 - Hazard map providing device, hazard map providing method, and computer program - Google Patents

Description

The present invention relates to a hazard map providing device and a hazard map providing method.

In order to guide citizens to a safe area when a disaster occurs, local governments have installed hazard map providing devices that receive areas of interest from user terminals and provide hazard maps associated with the areas of interest. ing.

For example, Patent Literature 1 discloses a tsunami evacuation guidance support system. The database of the tsunami evacuation guidance support system of Patent Literature 1 stores a simulation map obtained by pre-simulating a plurality of assumed tsunami inundation ranges corresponding to assumed conditions of various hypocenters, magnitudes, and tsunami wave heights. The data processing device of the tsunami evacuation guidance support system reads from the database the simulation map corresponding to the information on the epicenter, magnitude, and tsunami wave height of the newly occurred earthquake and the hazard map of the local government. Then, the data processing device takes the logical sum of the assumed tsunami inundation areas of the simulation map and the hazard map as the expected tsunami inundation area, and uses the data showing the assumed tsunami inundation area on the map as the tsunami inundation area. It is transmitted to an information terminal device existing within or near the expected range.

JP 2015-094956 A

As described above, the data processing device disclosed in Patent Document 1 simulates the effects of a tsunami generated by the scale of an earthquake, calculates the inundation range, and takes a logical sum with the inundation range of the hazard map to obtain a new inundation. Reflect the range on the hazard map. However, with the configuration disclosed in Patent Document 1, there is a problem that the hazard map does not take into consideration the influence of ground deformation that is constantly progressing in various places.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a hazard map providing device and a hazard map providing method that considers the impact of ground deformation on the hazard map and provides a highly reliable hazard map that is more suited to the actual situation. .

A hazard map providing apparatus according to one aspect of the present invention includes an area of interest acquisition unit that acquires information about a user's area of interest, a hazard map storage unit that stores a hazard map, and a ground displacement map storage that stores the ground displacement map over time. and acquiring a hazard map corresponding to the area of interest from the hazard map storage unit, acquiring a ground secular displacement map corresponding to the area of interest from the secular ground displacement map storage unit, and corresponding to the acquired area of interest. a hazard map construction unit that updates the obtained hazard map based on the acquired secular ground displacement map corresponding to the area of interest; a hazard map providing unit that provides the updated hazard map;
have

A hazard map providing method according to another aspect of the present invention acquires information about a user's area of interest, acquires a hazard map corresponding to the area of interest, acquires a ground secular displacement map corresponding to the area of interest, and acquires The hazard map corresponding to the area of interest obtained is updated based on the acquired secular ground displacement map corresponding to the area of interest, and the updated hazard map is provided.

According to the above aspect of the present invention, in the hazard map providing device and the hazard map providing method, it is possible to provide a highly reliable hazard map that is further adapted to the actual situation by considering the influence of ground deformation on the hazard map.

FIG. 1 is a block diagram showing the configuration of the hazard map providing device of the first embodiment. FIG. 2 is a flow chart showing the operation of the hazard map providing device of FIG. FIG. 3 is a block diagram showing the configuration of the second embodiment. FIG. 4 is a diagram illustrating an example of a hazard map acquired by a hazard map acquisition unit; FIG. 5 is a diagram showing an example of the secular ground displacement map acquired by the secular ground displacement map acquiring section. FIG. 6 is a flow chart showing the operation of the hazard level updating section of FIG. FIG. 7 is a diagram showing a hazard map output as a result of the operation according to the flowchart of FIG. FIG. 8 is a block diagram showing the configuration of the third embodiment. FIG. 9 is a flow chart showing operations of the map adjusting section and the map superimposing section in FIG. FIG. 10 is a block diagram showing the configuration of the fourth embodiment. FIG. 11 is a block diagram showing the configuration of the fifth embodiment.

A first exemplary embodiment will now be described with reference to the drawings. FIG. 1 is a block diagram showing the configuration of the hazard map providing device of the first embodiment.

As shown in FIG. 1, the hazard map providing device 1 includes an area of interest acquisition unit 11 that acquires information about a user's area of interest, a hazard map storage unit 12 that stores a hazard map, and a hazard map corresponding to the area of interest. A hazard map construction unit 13 for construction and a hazard map provision unit 14 for providing a hazard map are provided.

When the user's mobile terminal transmits the user identification information and the information about the user's area of interest, the area of interest acquisition unit 11 receives the user identification information and the information about the user's area of interest. The area-of-interest acquisition unit 11 stores the received user identification information and information about the user's area of interest in, for example, a storage unit (not shown) inside the area-of-interest acquisition unit 11 .

The hazard map storage unit 12 acquires and stores hazard maps within the area of each municipality, for example, from hazard map GIS (Geographic Information System) publicized by municipalities nationwide. The hazard map is a visualization of the hazard level indicating the degree of risk of flood damage in each area on the map of the target area.

The hazard map construction unit 13 acquires a user's area of interest from the area of interest acquisition unit 11 and acquires a hazard map corresponding to the acquired area of interest of the user from the hazard map storage unit 12 .

Further, the hazard map providing device 1 of the first embodiment of the present invention includes an aging ground displacement map storage unit 15 that stores an aging ground displacement map. It is connected to the. The secular ground displacement map storage unit 15 acquires and stores the secular ground displacement map by, for example, a method of ground displacement monitoring using a synthetic aperture radar. In addition, the secular ground displacement map storage unit 15 acquires the secular ground displacement map at appropriate times and updates the secular ground displacement map stored therein. Note that the secular ground displacement map is a map in which the secular change rate of the ground rising or falling in each area is visualized on the map of the target area.

Various methods are conceivable for visualization of the hazard level and aging rate. For example, a method of showing contour lines on the map, a method of coloring the areas delimited by the contour lines with different colors, and a method of shading the areas delimited by the contour lines with different patterns are conceivable. Any suitable method of presentation may be used.

When the hazard map construction unit 13 acquires the hazard map corresponding to the user's area of interest from the hazard map storage unit 12, the hazard map construction unit 13 converts the ground secular displacement map corresponding to the user's area of interest acquired from the area of interest acquisition unit 11 into the ground secular displacement map. Acquired from the displacement map storage unit 15 . The hazard map construction unit 13 updates the hazard map corresponding to the area of interest based on the secular ground displacement map acquired from the secular ground displacement map storage unit 15 . For example, the hazard map constructing unit 13 identifies an area in the obtained ground displacement map over time, where the speed of ground descent over time exceeds a predetermined value, and determines the hazard level of that area obtained from the hazard map storage unit 12. to update.

The hazard map providing unit 14 provides an updated hazard map based on the secular ground displacement map. For example, the hazard map providing unit 14 transmits the hazard map to the user's mobile terminal from which the area-of-interest acquisition unit 11 has acquired information about the area of interest.

FIG. 2 is a flow chart showing the operation of the hazard map providing device of FIG. As shown in FIG. 2, first, the area-of-interest acquiring unit 11 acquires information about the user's area of interest (step S1). Next, the hazard map construction unit 13 acquires a hazard map corresponding to the area of interest from the hazard map storage unit 12 (step S2).

Also, the hazard map construction unit 13 acquires the secular ground displacement map corresponding to the area of interest from the secular ground displacement map storage unit 15 (step S3). Then, the hazard map construction unit 13 updates the hazard map corresponding to the area of interest acquired from the hazard map storage unit 12 in step S2 based on the ground displacement map acquired in step S3. For example, the hazard map construction unit 13 identifies an area in which the secular displacement speed exceeds a predetermined value in the secular ground displacement map acquired in step S3, and determines the hazard map of that area acquired from the hazard map storage unit 12 in step S2. The level is updated to a higher value, and the updated hazard level is visualized on the hazard map corresponding to the area of interest (step S4).

Then, the hazard map providing unit 14 provides the hazard map updated based on the secular ground displacement map in step S4 (step S5).

According to the first embodiment described above, the hazard map corresponding to the area of interest and the secular ground displacement map corresponding to the area of interest are acquired, and the hazard map is updated and provided based on the secular ground displacement map. With this configuration, it is possible to provide highly reliable hazard map information that is more suited to the actual situation, taking into consideration the influence of ground deformation on the hazard map.

Next, a second embodiment will be described. FIG. 3 is a block diagram showing the configuration of the second embodiment. As shown in FIG. 3, the hazard map providing device 2 of the present embodiment has a hazard map construction unit 16 that includes a hazard map acquisition unit 161 and a ground displacement map acquisition unit 161, as compared with the configuration of the first embodiment. 162 , an update area identification unit 163 , and a hazard level update unit 164 .

The hazard map acquisition unit 161 acquires from the hazard map storage unit 12 a hazard map corresponding to the user's area of interest acquired from the area of interest acquisition unit 11 . 4 is a diagram showing an example of a hazard map acquired by the hazard map acquisition unit of FIG. 3. FIG. For example, as shown in Figure 4, the target area is divided according to the degree of risk of flood damage. Hazard levels are visualized. For example, as shown in FIG. 4, an area close to the river area B10 is shaded with a high density pattern as a large hazard level area A10 having a high risk of flood damage. An area adjacent to the high hazard level area A10 and away from the river area B10 is shaded with a medium density pattern as a medium hazard level area A20 with medium risk of flood damage. An area adjacent to the medium hazard level area A20 and further away from the river area B10, for example, a small hazard level area A30 with a low risk of flood damage, is hatched with a light density pattern. An area further away from the river area B10, for example, a hazard level non-target area A40 where there is almost no risk of flood damage, is shaded with a lighter density pattern.

The secular ground displacement map acquisition unit 162 also acquires the secular ground displacement map corresponding to the user's area of interest acquired from the area of interest acquisition unit 11 from the secular ground displacement map storage unit 15 . FIG. 5 is a diagram showing an example of the secular ground displacement map acquired by the secular ground displacement map acquiring unit in FIG. 3 . As shown in FIG. 5, the target area is divided according to the displacement speed of the ground displacement over time, and each area is shaded with a different pattern to visualize the displacement speed of each area. For example, as shown in FIG. 5, a pattern with a high density is shaded in an area C10 where the ground descends at a displacement rate of 10 mm/year or more, for example. In addition, a medium-density pattern is shaded in a displacement rate 0-10 mm/year area C20 where the ground descends at a displacement rate of 0-10 mm/year. In addition, the non-displacement velocity target area C30, which is an area where the ground is rising, is shaded with a light density pattern.

The updated area identifying unit 163 identifies areas in the acquired secular ground displacement map in which the secular displacement speed of ground descent has exceeded a predetermined value. For example, when 10 mm/year is set as the predetermined value, the updated area specifying unit 163 specifies an area C10 in which the secular displacement rate is 10 mm/year or more in the obtained secular ground displacement map.

The hazard level updating unit 164 updates the hazard level of the area specified by the update area specifying unit 163 in the hazard map acquired by the hazard map acquiring unit 161 from the hazard map storage unit 12 . The hazard level updating unit 164 then visualizes the updated hazard level in the hazard map acquired by the hazard map acquiring unit 161 from the hazard map storage unit 12 .

Next, the operation of this embodiment will be described. This embodiment is similar to the first embodiment. As shown in FIG. 2, first, the area-of-interest acquiring unit 11 acquires information about the user's area of interest (step S1). Next, the hazard map acquisition unit 161 of the hazard map construction unit 16 acquires a hazard map corresponding to the area of interest from the hazard map storage unit 12 (step S2).

Also, the secular ground displacement map acquisition unit 162 of the hazard map construction unit 16 acquires the secular ground displacement map corresponding to the area of interest from the secular ground displacement map storage unit 15 (step S3). Then, the hazard map corresponding to the area of interest acquired from the hazard map storage unit 12 in step S2 is updated based on the ground secular displacement map acquired in step S3. Specifically, for example, the updated area identifying unit 163 of the hazard map constructing unit 16 identifies areas in the secular ground displacement map acquired in step S3 in which the secular displacement speed of ground descent exceeds a predetermined value. Then, the hazard level update unit 164 of the hazard map construction unit 16 updates the hazard level of the area that the hazard map acquisition unit 161 has acquired from the hazard map storage unit 12 in step S2. Then, the hazard level update unit 164 visualizes the updated hazard level in the hazard map acquired by the hazard map acquisition unit 161 from the hazard map storage unit 12 (step S4).

Then, the hazard map providing unit 14 provides an updated hazard map based on the secular ground displacement map (step S5).

Next, the operation of the hazard level updating section 164 will be described in more detail. FIG. 6 is a flow chart showing the operation of the hazard level updating section of FIG.

As shown in FIG. 6, the hazard level updating unit 164 first determines the hazard level from the read hazard map. The hazard level updating unit 164 determines whether or not the hazard level is high (step S11), and if it determines that the hazard level is not high (No), the process proceeds to step S15. On the other hand, if it is determined that the level is high (Yes) in step S11, the hazard level updating unit 164 proceeds to step S12 and checks the displacement map with the aging displacement rate (mm/year). The hazard level updating unit 164 determines whether or not the secular displacement speed of ground descent is, for example, 10 mm/year or more (step S12). Keep the level large. On the other hand, if the hazard level updating unit 164 determines in step S12 that it is 10 mm/year or more (Yes), the process proceeds to step S14, and the hazard level is updated to the extra-large level.

In step S15, the hazard level updating unit 164 determines whether or not the hazard level is medium (step S15), and if it determines that it is not medium (No), the process proceeds to step S19. On the other hand, if it is determined that the level is in progress (Yes) in step S15, the hazard level updating unit 164 proceeds to step S16 and checks the displacement map with the aging displacement rate (mm/year). The hazard level update unit 164 determines whether or not the aging displacement rate is 10 mm/year or more (step S16), and if it determines that it is less than 10 mm/year (No), proceeds to step S17, and keeps the hazard level at level. do. On the other hand, if it is determined at step S16 to be 10 mm/year or more (Yes), the hazard level updating unit 164 proceeds to step S18 and updates the hazard level to a high level.

In step S19, the hazard level update unit 164 determines whether or not the hazard level is low (step S19). On the other hand, if it is determined that the level is low (Yes) in step S19, the hazard level updating unit 164 proceeds to step S20 and checks the displacement map with the aging displacement rate (mm/year). The hazard level update unit 164 determines whether or not the aging displacement rate is 10 mm/year or more (step S20), and if it determines that it is less than 10 mm/year (No), proceeds to step S21, and maintains the hazard level as level small. do. On the other hand, if it is determined to be 10 mm/year or more (Yes) in step S20, the hazard level updating unit 164 proceeds to step S22 and updates the hazard level to middle level.

In step S23, the hazard level update unit 164 determines whether or not the hazard level is out of target (step S23), and returns to step S11 if it determines that it is not out of target (No). On the other hand, if it is determined to be out of target (Yes) in step S23, the hazard level updating unit 164 proceeds to step S24 and checks the displacement map with the aging displacement rate (mm/year). The hazard level updating unit 164 determines whether or not the aging displacement rate is 10 mm/year or more (step S24), and if it determines that it is less than 10 mm/year (No), proceeds to step S25, and keeps the hazard level as ineligible. do. On the other hand, if it is determined at step S24 that it is 10 mm/year or more (Yes), the hazard level updating unit 164 proceeds to step S26 and updates the hazard level to level low.

FIG. 7 is a diagram showing a hazard map output as a result of the operation according to the flowchart of FIG. It is determined that the hazard level is high (step S11 in FIG. 6), and then the result of determining whether or not the aging displacement rate is 10 mm/year or more (step S12 in FIG. 6) is reflected, and the hazard level The area updated as extra-large is the hazard level extra-large area A01 in FIG.

It is determined that the hazard level is middle level (step S15 in FIG. 6), and then the result of determining whether or not the aging displacement rate is 10 mm/year or more (step S16 in FIG. 6) is reflected and the hazard level is set to high. is the large hazard level area A11 in FIG.

It is determined that the hazard level is low (step S19 in FIG. 6), and then it is determined whether or not the aging displacement rate is 10 mm/year or more (step S20 in FIG. 6). is the medium hazard level area A21 in FIG.

It is determined that the hazard level is out of target (step S23 in FIG. 6), and then the result of determining whether the aging displacement rate is 10 mm/year or more (step S24 in FIG. 6) is reflected to reduce the hazard level. is the small hazard level area A31 in FIG.

According to the second embodiment described above, as in the first embodiment, a hazard map corresponding to the area of interest and a ground secular displacement map corresponding to the area of interest are acquired, and based on the secular displacement velocity in the secular displacement map, Hazard maps updated and provided. With this configuration, as in the first embodiment, it is possible to provide highly reliable hazard map information that is more suited to the actual situation by considering the influence of ground deformation on the hazard map.

Next, a third embodiment will be described. FIG. 8 is a block diagram showing the configuration of the third embodiment. As shown in FIG. 8, in the hazard map providing device 3 of the third embodiment, the hazard map construction unit 17 replaces the update area identification unit 163 and the hazard level update unit 164 with the second embodiment. The second embodiment differs from the second embodiment in that it includes a map adjusting section 171 and a map superimposing section 172 .

As in the first and second embodiments, when the user identification information and the information about the user's area of interest are transmitted from the user's terminal, the area of interest obtaining unit 11 acquires the user identification information and the user's area of interest. Information about the area of interest is stored in the storage unit inside the area of interest acquisition unit 11 .

The hazard map storage unit 12 acquires and stores hazard maps published by local governments nationwide, as in the first and second embodiments. The secular ground displacement map storage unit 15 acquires and stores the secular ground displacement map acquired by the method of ground displacement monitoring using the synthetic aperture radar, as in the first and second embodiments.

The hazard map acquisition unit 161 of the hazard map construction unit 17 acquires from the hazard map storage unit 12 the hazard map corresponding to the user's area of interest stored in the area of interest acquisition unit 11, as in the second embodiment. Further, the secular ground displacement map acquisition unit 162 of the hazard map construction unit 17 acquires the secular ground displacement map corresponding to the user's area of interest stored in the area of interest acquisition unit 11, as in the second embodiment. Acquired from the storage unit 15 .

The map adjusting unit 171 first compares the sizes of the hazard map and the secular ground deformation map corresponding to the same area of interest, and if the sizes are different, adjusts the size of at least one of them so that the sizes of the two match. . In addition, the map adjustment unit 171 erases the color coding and patterns added to areas where the rate of secular displacement of the ground does not exceed a predetermined value.

The map superimposing unit 172 superimposes the hazard map and the secular ground displacement map adjusted by the map adjusting unit 171 so that the coordinates match and outputs them.

Therefore, in the hazard map output by this embodiment, for example, the extra-large hazard level area A01 in FIG. 7 has the pattern of the large hazard level area A10 in FIG. is superimposed on the pattern. In the hazard map output according to the present embodiment, the high hazard level area A11 in FIG. 7 is superimposed on the pattern of the medium hazard level area A20 in FIG. 4 and the pattern of the area C10 in FIG. pattern. In the hazard map output according to the present embodiment, the medium hazard level area A21 in FIG. 7 is superimposed on the pattern of the small hazard level area A30 in FIG. 4 and the pattern of the area C10 in FIG. pattern. In the hazard map output according to this embodiment, the hazard level small area A31 in FIG. 7 is superimposed on the pattern of the hazard level non-target area A40 in FIG. 4 and the pattern of the area C10 of displacement rate 10 mm/year or more in FIG. pattern.

As in the first and second embodiments, the hazard map providing unit 14 provides the hazard map updated by the hazard map constructing unit 17 based on the secular ground displacement map.

Next, the operation of this embodiment will be described. In this embodiment, steps S1 to S3 are first performed in the same manner as in the first embodiment. That is, first, as shown in FIG. 2, the area-of-interest acquiring unit 11 acquires information about the user's area of interest (step S1). Next, the hazard map acquisition unit 161 of the hazard map construction unit 17 acquires a hazard map corresponding to the area of interest from the hazard map storage unit 12 (step S2). Also, the secular ground displacement map acquisition unit 162 of the hazard map construction unit 17 acquires the secular ground displacement map corresponding to the area of interest from the secular ground displacement map storage unit 15 (step S3).

After that, in this embodiment, the map adjusting unit 171 and the map superimposing unit 172 adjust the sizes of the corresponding hazard map and the secular ground displacement map so that they match, and superimpose them so that their coordinates match. FIG. 9 is a flow chart showing operations of the map adjusting section and the map superimposing section in FIG.

After steps S2 and S3, the map adjuster 171 compares the sizes of the hazard map and the secular ground displacement map corresponding to the same area of interest (step S31). If it is determined in step S31 that the sizes are the same, the map adjustment unit 171 proceeds to step S33. If it is determined that the sizes are different in step S31, the map adjustment unit 171 adjusts the size of at least one of them so that the two sizes match (step S32). If both sizes match, the map adjustment unit 171 proceeds to step S33.

In step S33, the map adjuster 171 erases the color coding and patterns added to areas in the secular ground displacement map where the secular displacement speed of ground descent does not exceed a predetermined value (step S33). Then, the map superimposing unit 172 superimposes the hazard map and the secular ground displacement map so that the coordinates of the two match. As a result, in areas where the secular displacement velocity of the ground descending exceeds a predetermined value in the secular ground displacement map, the color coding and patterns added in the secular ground displacement map are superimposed on the color coding and patterns added in the hazard map. be. Therefore, in areas where the secular displacement rate of the ground that descends exceeds a predetermined value, the hazard level is visualized in the direction of increasing. Thus, the hazard map obtained by the hazard map obtaining unit 161 from the hazard map storage unit 12 in step S2 is updated based on the ground displacement map obtained in step S3 (step S34).

Then, the hazard map providing unit 14 provides an updated hazard map based on the secular ground displacement map (step S5).

According to the third embodiment described above, as in the first and second embodiments, a hazard map corresponding to the area of interest and a ground secular displacement map corresponding to the area of interest are acquired. Hazard maps are updated and provided based on speed. With this configuration, as in the first and second embodiments, it is possible to provide highly reliable hazard map information that is more suited to the actual situation by taking into consideration the influence of ground deformation on the hazard map.

By combining the second embodiment and the third embodiment, the hazard map constructing unit 17, along with the map adjusting unit 171 and the map superimposing unit 172, furthermore, the update area specifying unit 163 of the second embodiment and the hazard level update A portion 164 may be provided. In the case of this configuration, first, the map adjusting unit 171 and the map superimposing unit 172 superimpose the hazard map and the secular ground displacement map. Then, the updated area specifying unit 163 specifies an area where the secular displacement speed of ground descent exceeds a predetermined value, the hazard level updating unit 164 updates the hazard level of the specified area, and the superimposed map is updated. It may be configured to visualize the hazard level.

Next, a fourth embodiment will be described. FIG. 10 is a block diagram showing the configuration of the fourth embodiment. As shown in FIG. 10, the hazard map providing device 4 of the present embodiment has a ground displacement impact data storage unit for storing ground displacement impact data, such as geological data, groundwater data, etc. 18. The hazard map construction unit 19 also includes a ground displacement impact data acquisition unit 191 that acquires ground displacement impact data corresponding to the area of interest. The hazard map providing device 4 of this embodiment differs from the second embodiment in these respects.

The ground displacement effect data storage unit 18 acquires and stores ground displacement effect data, such as geological data, groundwater data, pumping amount data, etc., which are published by public institutions and which affect ground displacement. The ground displacement influence data acquisition unit 191 acquires the ground displacement influence data of the area corresponding to the user's area of interest from the ground displacement influence data storage unit 18 .

The updated area identifying unit 192 identifies an area in which the decreasing secular displacement speed of the ground contained in the secular displacement map exceeds a predetermined value, and provides the hazard level updating unit 193 with the secular displacement speed of the area and the ground Output displacement effect data. The hazard level updating unit 193 comprehensively quantifies and visualizes the hazard level in the area.

According to the fourth embodiment described above, similarly to the first, second, and third embodiments, the hazard map corresponding to the area of interest and the secular ground displacement map corresponding to the area of interest are obtained. A hazard map is updated and provided based on the displacement rate over time. With this configuration, as in the first, second, and third embodiments, it is possible to provide highly reliable hazard map information that is more suited to the actual situation, considering the influence of ground deformation on the hazard map.

In addition, since the present embodiment considers the influence of ground displacement influence data such as geological data, groundwater data, pumping amount data, etc. on the hazard map, it is possible to obtain a reliable map that is more suitable for the actual situation than the first, second and third embodiments. It is possible to provide highly effective hazard map information.

By combining the fourth embodiment and the third embodiment, the hazard map construction unit 19, along with the ground displacement impact data acquisition unit 191, the update area identification unit 192, and the hazard level update unit 193, can be used in the third implementation. A morphology map adjustment unit 171 and a map superimposition unit 172 may be provided. In the case of this configuration, for example, first, the map adjusting unit 171 and the map superimposing unit 172 superimpose the hazard map and the secular ground displacement map. Then, the ground displacement influence data acquisition unit 191 acquires the ground displacement influence data of the area corresponding to the user's area of interest from the ground displacement influence data storage unit 18 . In addition, the updated area specifying unit 192 specifies an area where the rate of ground displacement over time is a predetermined value or more, and the hazard level updating unit 193 comprehensively quantifies the hazard level in the area in the superimposed map. Visualize.

Next, a fifth embodiment will be described. The hazard map providing device 5 of the present embodiment is configured to provide more detailed information to the user as the user level for which the charge is higher.

FIG. 11 is a block diagram showing the configuration of the fifth embodiment. The hazard map providing device 5 of this embodiment includes a user level storage unit 20 that stores user identification information and corresponding user levels. When the information about the area of interest is sent, the user identification information, the corresponding user level and the information about the user's area of interest are stored in an internal storage unit. The hazard map constructing unit 22 outputs the hazard map corresponding to the user level to the hazard map providing unit 14 . The hazard map providing device 5 of this embodiment differs from other embodiments in these respects. Here, the user level is the range in which the user can obtain information, which is ranked according to the charge. The hazard map storage unit 12, the secular ground displacement map storage unit 15, and the ground displacement influence data storage unit 18 connected to the hazard map construction unit 22 are the same as those in the other embodiments described above.

For example, when the user level acquired from the area-of-interest acquisition unit 21 is "0", which means that the charging fee is free, the hazard-map construction unit 22 outputs the result of searching for the area of interest to the hazard-map providing unit 14. Do not print the map. Further, when the user level acquired from the area of interest acquisition unit 21 is "1", the hazard map construction unit 22 generates a hazard map showing the hazard level of the area of interest in monochrome. Output to the map providing unit 14 . Therefore, a user with a user level of "1" can know whether or not the hazard level has been updated, but cannot quantitatively know the degree of danger. If the user level acquired from the area of interest acquisition unit 21 is "2", which is higher than "1", the hazard map construction unit 22 creates a hazard map showing the hazard level of the area of interest in color. Output to the map providing unit 14 . Therefore, a user whose user level is "2" can quantitatively know the degree of danger. Further, when the user level obtained from the area of interest obtaining unit 21 is "3", which is higher than "2", the hazard map construction unit 22 provides a hazard map that takes into consideration the aging rate of the area of interest. Output to the unit 14 . Alternatively, the hazard map constructing unit 22 outputs to the hazard map providing unit 14 a hazard map indicating a hazard level considering the aging displacement velocity and ground displacement influence data. Alternatively, the hazard map constructing unit 22 outputs the one selected by the user among these to the hazard map providing unit 14 . For this reason, when the user identification information and the information about the user's area of interest are transmitted from the user's terminal, the area-of-interest obtaining unit 21 obtains the selection information of the output content, and obtains the user identification information, the corresponding user level, and the user may be stored in an internal storage unit together with information about the area of interest. Note that the correspondence between the user level and the output content described above is merely an example, and is not limited to this.

Further, the fifth embodiment and the first to fourth embodiments may be combined, and in the first to fourth embodiments, the user level storage section 20 connected to the area of interest acquisition section may be further provided. In this case, when the user identification information and the information on the user's area of interest are transmitted from the user's terminal, the area of interest acquisition unit stores the user identification information, the corresponding user level, and the information on the user's area of interest in the internal storage unit. Store. Then, the hazard map constructing unit outputs a hazard map corresponding to the user level to the hazard map providing unit 14 .

Although the present invention has been described with reference to the embodiments, the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

1, 2, 3, 4, 5 Hazard map providing device 11, 21 Interest area acquiring unit 12 Hazard map storage unit 13, 16, 19, 22 Hazard map construction unit 14 Hazard map providing unit 15 Ground secular displacement map storage unit 161 Hazard Map acquisition unit 162 Ground displacement map acquisition unit 163, 192 Update area identification unit 164, 193 Hazard level update unit 171 Map adjustment unit 172 Map superimposition unit 18 Ground displacement impact data storage unit 191 Ground displacement impact data acquisition unit 20 User level storage Department

Claims (11)

an area-of-interest acquisition unit that acquires information about a user's area of interest;
a hazard map storage unit that stores a hazard map;
a secular ground displacement map storage unit that stores the secular ground displacement map;
Acquiring a hazard map corresponding to the area of interest from the hazard map storage unit, acquiring a secular ground displacement map corresponding to the area of interest from the secular ground displacement map storage unit, and obtaining a hazard map corresponding to the acquired area of interest. a hazard map construction unit that updates based on the acquired secular ground displacement map corresponding to the area of interest;
a hazard map provider that provides updated hazard maps;
A hazard map providing device having The hazard map construction unit
a hazard map acquisition unit that acquires a hazard map corresponding to the area of interest from the hazard map storage unit;
a ground displacement map acquisition unit that acquires the ground displacement map corresponding to the area of interest from the ground displacement map storage unit;
an updated area identification unit that identifies an area in which the secular displacement velocity of the ground that descends exceeds a predetermined value in the secular displacement map corresponding to the area of interest;
a hazard level updating unit that updates the hazard level of the area specified by the update area specifying unit in the hazard map corresponding to the area of interest and visualizes the hazard level in the hazard map corresponding to the area of interest;
The hazard map providing device according to claim 1, comprising: The hazard map construction unit
a hazard map acquisition unit that acquires a hazard map corresponding to the area of interest from the hazard map storage unit;
a ground displacement map acquisition unit that acquires the ground displacement map corresponding to the area of interest from the ground displacement map storage unit;
a map adjustment unit that adjusts the size of at least one of the hazard map corresponding to the area of interest and the size of the secular ground displacement map corresponding to the area of interest so that the sizes match;
a map superimposing unit that superimposes the hazard map and the secular ground displacement map adjusted by the map adjusting unit so that the coordinates match;
The hazard map providing device according to claim 1 or 2, comprising: 4. The hazard map providing apparatus according to claim 3, wherein said map adjusting unit deletes the color coding or pattern added to areas where the rate of secular displacement of the ground that decreases over time does not exceed a predetermined value. 5. The hazard map providing apparatus according to any one of claims 1 to 4, further comprising a ground displacement influence data storage unit for storing ground displacement influence data affecting ground displacement, such as geological data, groundwater data, and the like. 6. The hazard map providing apparatus according to any one of claims 1 to 5, comprising a user identification information of a user and a user level storage section for storing corresponding user levels. The hazard map providing device
get information about the user's area of interest,
obtaining a hazard map corresponding to the area of interest;
Acquiring a ground secular displacement map corresponding to the area of interest, updating the acquired hazard map corresponding to the area of interest based on the acquired secular ground displacement map corresponding to the area of interest, and providing the updated hazard map do,
A hazard map providing method characterized by : an area-of-interest acquisition unit that acquires information about a user's area of interest;
a hazard map providing unit that provides a hazard map generated based on the hazard map corresponding to the area of interest and the secular displacement map corresponding to the area of interest;
A hazard map providing device having 9. The hazard map providing apparatus according to claim 8, wherein said hazard map providing unit provides said hazard map expressed using levels indicating disaster risk. The hazard map providing device
get information about the user's area of interest,
Providing a hazard map generated based on the hazard map corresponding to the area of interest and the secular displacement map corresponding to the area of interest
A hazard map providing method characterized by: to the computer,
a process of obtaining information about a user's area of interest;
a process of providing a hazard map generated based on the hazard map corresponding to the area of interest and the secular displacement map corresponding to the area of interest;
computer program that causes the

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