KR101640793B1 - Method of real-time monitoring for coastal anomalies - Google Patents

Abstract

A coastal sea real-time anomaly observation method is disclosed. A method for observing a coastal sea real-time anomaly phenomenon according to the present invention comprises the steps of: a) setting a coastal reference point in a coastal area of a coastal area, setting a national reference point as a land reference point when a national reference point exists, Obtaining a sea level reference and an elevation data of the land reference point by performing a standing survey and a level measurement on the land reference point set after the coast reference point is set and acquiring the average sea level data from the tidal observation data of the coastal area; b) installing an onshore laser measuring instrument at the land reference point when the land reference point is set through the step a), and installing at least one float on the sea of the coastal area; And c) measuring the beach and the sea of the coastal area simultaneously in real time using the terrestrial laser measuring device to obtain the terrain elevation and terrain elevation data of the terrain as the terrain data of the beach, And acquiring the change data of the sea level in real time through the elevation data or the water level data. According to the present invention, real-time measurement of float on the coastal and coastal waters is carried out using terrestrial laser measuring instruments to acquire real-time data of the sea level and sea level from the land terrain data, It is possible to observe the anomalies of the coastal area in real time. Based on this, coastal erosion, sedimentation, retreat of shoreline, monitoring of oceanographic changes, or observation of abnormal sea waves, It is possible to provide an effect of effectively responding to a disaster disaster.

Description

{Method of real-time monitoring for coastal anomalies}

The present invention relates to a method for observing real-time anomalous phenomena in coastal waters, and more particularly, to a method for monitoring coastal sea real-time anomalous phenomena in coastal waters, A land laser meter is installed in the coastal area, and a float for measurement is installed on the sea. By using the land laser meter, it is possible to measure the marginal water of each fluid and the sea level data in real time, And an abnormal phenomenon observation method.

Recently, there have been frequent occurrences of safety accidents in which people who have been exposed to sea breezes on the beaches at home and abroad have been drifting from the beach to the deep sea by Ian Ryu and are at risk. Especially, the Ian type that causes human accidents and safety accidents is a "sudden" type of Ian, which occurs suddenly within about 5 minutes. Therefore, it is necessary to analyze the flow rate of the current flowing from the coast to the sea when the wave invades the coast from the distant sea and judge whether or not the sea current is generated. Then, if necessary, There is a need.

There has been a need to predict inundation floods such as tsunamis and swells, as well as the above-mentioned Ian species.

In view of this, Korean Patent No. 10-1191944 (Announcement: October 17, 2012) discloses a method for generating an alarm. In the method of generating alarms, the flow rate of the ocean current is calculated by performing a simulation of a state in which the current is generated in the target area by using the terrain information and the virtual sea condition scenario for the target region to monitor the occurrence of the current flow Calculating an ice flow index by quantifying the degree of occurrence of ice flow in the target area as an index on the basis of the flow rate information of the ocean current derived from the simulation result, A step of calculating a binaural occurrence index while changing an imaginary sea condition scenario, a step of acquiring a sea condition which is measured in real time in a target area, The correlation between the binaural index information and the occurrence of the binaural occurrence alarm And a step of judging whether or not there is an abnormality.

However, this method of generating alarms is configured to determine occurrence of alarms based on virtual sea condition scenarios and to generate an alarm, so that the change of the coastal terrain and actual anomalies occurring in coastal waters, for example, There was a problem that it was not possible to observe in real time such as anomalous waves, wavy waves, tidal waves, flood flooding,

As another prior art, Korean Patent No. 10-1176901 (Announcement: Oct. 10, 2012) discloses a countermeasure generation and warning device. The two-way flow forecasting and alarming device includes a plurality of buoyancy measuring buoys installed on the sea surface of the expected oceans occurrence area, a plurality of observation observations installed on the path of the groundwater flowing into the oceans generation expected area, And a meter reading unit for receiving and recording the velocity of the seawater and the water pressure of the groundwater in real time in the buoyancy measuring buoy and the water pressure sensor.

However, the prediction and warning system of this kind of incidents has a lot of costs due to the installation of checks and observations, and there is a limit to predict anomalies such as tsunamis or waviness waves.

As another prior art, Korean Patent No. 10-1153706 (Published on June 06, 2012) discloses a coastal precision storm tsunami prediction system and a coastal precision storm tsunami prediction method. The coastal precise storm tsunami prediction system and the coastal precise storm tsunami prediction method are methods for predicting coastal storm surge by producing weather input data and calculating accurate tsunami by distinguishing between typhoon time and non-typhoon time, There is a problem that it is not possible to observe the coastal tidal wave, the lunar current, and the waviness wave in real time.

As another prior art, Korean Patent Laid-Open No. 10-2010-138038 (published on Dec. 31, 2010) discloses a method for producing an overland-to-sea high-precision topographic map for flood-flood prediction and disaster charting. In order to acquire information on precise coastal areas through high-resolution and several-centimeter accuracy land-sea mapping, the method for producing flooded-flood forecasting and disaster charts is based on a terrain survey using a terrestrial 3D laser scanner And the multi-beam echo sounder were performed at sari, low tide, and high tide. In order to match the obtained points to the real world horizontal coordinate of the GRS80 ellipsoid reference WGS84 coordinate system, The tide observation and observation are performed for the surveying and tidal correction, and the vertical coordinate system is unified based on the geodetic reference plane which is the average sea level of Incheon. A digital elevation model (DSM) and a digital surface model (DSM) can be obtained from the surveyed and calibrated data obtained from this process,

The digital surface model (DSM) data obtained in this way can be used for the input data of the flood forecasting model and the hazard map, but it is difficult to observe in real time, and the terrestrial 3D laser scanner There is a problem that it is necessary to perform complicated exaggeration to combine the data obtained with the water depth measurement data and the tide data.

. Korean Patent No. 10-1191944 (Published on October 17, 2012) . Korean Patent No. 10-1176901 (Published on October 10, 2012) . Korean Patent No. 10-1153706 (Notification date: June 5, 2012) . Korean Patent Publication No. 10-2010-138038 (Publication date: December 31, 2010)

It is an object of the present invention to provide a method and apparatus for measuring landform changes such as anomalies in coastal waters, coastal waters, erosion, sedimentation, and the like, such as abnormal waves, waved waves, Monitoring the anomalies and providing a means to effectively respond to coastal disasters.

The present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to at least partially solve the problems in the conventional arts. It can be understood.

According to the present invention, the above object can be achieved by a method of setting a land reference point in a coastal area, setting a national reference point as a land reference point when a national reference point exists, Obtaining a sea level reference and elevation data of the land reference point by performing a standing survey and a level survey on the set land reference point after setting the reference point and obtaining average sea level data from the tidal observation data of the coastal area; b) installing an onshore laser measuring instrument at the land reference point when the land reference point is set through the step a), and installing at least one float on the sea of the coastal area; And c) measuring the beach and the sea of the coastal area simultaneously in real time using the terrestrial laser measuring device to obtain the terrain elevation and terrain elevation data of the terrain as the terrain data of the beach, And obtaining the change data of the sea level in real time through the elevation data or the water level data in the real time.

The step b) may further comprise the step of providing a shoreline change measurement indicator on the shoreline of the coastal area.

The step (c) may further include the step of outputting, as an image, numerical values of the radar and terrain elevation data of the land terrain acquired through the terrestrial laser measuring device, and the diameters and elevation and elevation data of the float And the like.

The step (c) includes comparing the topographic data of the beach and the sea level data obtained by measuring the floods of the beach and the sea at the same time in real time with the terrestrial laser measuring device, comparing the data of the terrestrial topographical data and the average sea level data, And detecting the terrain change of the area and the abnormal change of the sea level.

The step c) may further include detecting a change in the terrain of the coastal area and outputting the shoreline change value as data.

The step c) may further include outputting the abnormal change of the sea level as a sea level change value and activating the warning system if the sea level change value is greater than the previously stored sea level change value.

According to the present invention, after a plurality of floats are installed on the coast of the coast, the position data on the beach and the position data of each float on the sea are simultaneously measured in real time by the land laser measuring instrument at the measurement point or the reference point on the land It is possible to quickly and easily grasp an anomalous phenomenon on the coast and to provide a system for constructing a system capable of grasping and warning on the coastal disaster in advance.

1 is a schematic flow chart for explaining a real-time anomaly observation method in coastal waters according to the present invention.
2 is a schematic block diagram for explaining a real-time abnormal phenomenon observation method in coastal waters according to the present invention.
FIG. 3 is an image for explaining a procedure of setting a land reference point on the roof of a building in Haeundae and installing a land laser instrument in order to perform a real-time anomaly observation method in coastal waters according to the present invention.
FIG. 4 is an image for explaining a state of setting a land reference point on which an on-land laser instrument is to be installed and measuring a land survey on a land reference point prior to performing the coastal sea real-time anomaly observation method according to the present invention.
5 and 6 are images for explaining a state in which a predetermined position of a coastal area is set as a land reference point on the assumption that there is no national reference point and a stop measurement of the land reference point is performed.
FIG. 7 is an image showing the result of surveying the beach and sea of Haeundae in Busan using a terrestrial laser measuring instrument according to the method of observing real-time abnormal phenomena in coastal waters according to the present invention.
FIG. 8 is an image of the same measurement results as in FIG. 7 viewed from the sky to the ground.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, the well-known functions or constructions are not described in order to simplify the gist of the present invention.

1 is a schematic flow chart for explaining a real-time abnormal phenomenon observation method in coastal waters according to the present invention, and FIG. 2 is a schematic diagram for explaining a real-time abnormal phenomenon observation method in coastal waters according to the present invention.

As shown in FIGS. 1 and 2, the coastal sea real-time anomalous phenomenon observation method according to the present invention is a method for observing changes in land and sea level simultaneously and in real time using a land laser meter 10, It is possible not only to simultaneously monitor abnormal changes in real time but also to cope with disaster disaster efficiently by using measured data.

This real-time anomaly observation method in coastal waters will be described in more detail.

a) Step

The land reference point P is set in the coastal area and the national reference point is set as the land reference point P when the national reference point is present and the land reference points P1 and P2 (P1 and P2) are obtained by performing stop measurement and level measurement for the set land reference points (P1 and P2), and obtaining the ridge height and elevation data of the land reference points (P1 and P2) Obtain the data. (S1)

  In order to utilize the national reference point as a land reference point (P), the land reference point (P) using the national reference point is stopped as shown in Fig.

5 and 6, when there is no national reference point or it is difficult to utilize, a predetermined position is set to the land reference points P1 and P2, and the land reference points P1 and P2 are stopped by GPS Leveling (elevation survey) is performed with RTK-GPS or Network-GPS together with surveying to acquire the census and elevation data.

These land reference points P, P1 and P2 are for installing the land laser measuring instrument 10 and can be used as a reference when the terrestrial laser measuring instrument 10 is installed on the land reference point P to measure the terrain.

This step is intended to be used as a reference data for judging the data obtained in step c) to be described later. In other words, it is a step to acquire reference data for determining abnormal changes of the beach or sea level during coastal observation.

The stop measurement and the level measurement are performed for each of the set land reference points (P, P1, P2) thus set to obtain the bead coordinates and elevation values of the land reference points (P, P1, P2). For this purpose, a terrestrial laser measuring instrument 10 equipped with a fiber-optic sensor may be used, or a GPS measurement may be performed through a separate position measuring instrument as described above to measure the radial position of each land reference point P, And elevation values can be obtained.

And, the average sea level data of the coastal area of the coastal area use the Incheon Middle Level (IMSL). At this time, it is possible to use the tide observation data of the coastal area based on the Incheon Middle Level, or to directly observe the tide and use it as the average sea level data.

b) Step

When the land reference points P, P1 and P2 are set in the above-described procedure, the land laser measuring instrument 10 is installed in the coastal area and at least one float 20 is installed in the sea area of the coastal area. S2)

The land laser meter 10 is installed at the land reference point P located at the highest point among the land reference points P, P1 and P2. This is because the terrestrial laser measuring instrument 10 must be located at a high position so that the flood of the beach and the sea can be simultaneously measured at the same time. If installed in a low area, the entire beach may not be surveyed.

This kind of land laser meter 10 (LiDAR: Light Detection And Ranging - RIEGL VZ-4000) is designed to scan an object (land or sea float) using a laser in three dimensions. The terrain can be surveyed in a stationary state from a high area with a precision of less than 1cm, and it can be output to a monitor and data can be output. That is, the terrestrial laser instrument 10 measures the time of a reflected wave reflected from a large amount of laser waves reflected from the beach, obtains a relative distance and a height value of the target beach from the survey point, and obtains the three- .

 Therefore, the terrestrial laser measuring instrument 10 simultaneously measures the positional information of the float 20 installed on the land and sea surface (such as the elevation and elevation of the terrain, the elevation and elevation of the float, and elevation or level data) , And the measured data can be output.

The float 20 installed on the sea is rope connected to the weight of the sea floor, and the length of the rope has a length sufficient to allow the float 20 to move back and forth, left and right and up and down. For example, it is preferable to form a length 2 to 3 times longer than the water depth.

The float 20 is preferably made of a material capable of easily reflecting the laser radiated from the above-mentioned terrestrial laser measuring instrument 10, or is coated with a reflective paint.

On the other hand, it is preferable that the terrestrial laser measuring instrument 10 is installed at a high position as described above so as to simultaneously measure the beach and the sea level. The float (20) may be arranged in a line or in a zigzag manner. It is preferable that the number of float 20 is arranged in proportion to the size of the coastal area.

In addition, as shown in FIG. 2, a plurality of shoreline change indicator 30 can be installed on the beach so as to more clearly grasp the change of the beach (coastline). The terrestrial laser measuring instrument 10 can measure the shoreline change measurement indicator 30 to more clearly observe the change of the shoreline, and output it as an image or data (number).

c) Step

When the terrestrial laser measuring instrument 10 is installed at the land-based reference point P located at the highest position in the above-described process, the terrestrial laser measuring instrument 10 measures the beach and the sea of the corresponding coastal area simultaneously in real time , Obtains the ground level topographic and terrain elevation data as the topographic data of the beach, and acquires the change data of the sea level in real time through the sea level and elevation or water level data of the float (20) installed on the sea. S3)

That is, the terrestrial laser instrument 10 emits laser beams simultaneously to the coastal beach and the float 20 on the coast, measures the time of the reflected waves reflected back from the beach and the float, The relative distance and height values, and the position of the float 20 (the degree of lunar and elevation or level data) are obtained, and the result is obtained as a three-dimensional image. At this time, it is a matter of course to measure the height and elevation of the indicator 30 for the shoreline change measurement.

Thus, since the terrestrial laser instrument 10 simultaneously measures the floods 20 on the beach and the sea in real time, it is possible to simultaneously observe the abnormal changes of the coastal sea and the sea level in real time.

The data measured by the terrestrial laser instrument 10 are shown in Figs. 7 and 8. Fig. Thus, the terrestrial laser instrument 10 can output the measurement result as image data such as a photograph or output numerical data though it is not shown in the figure. Therefore, based on these data, it is possible to simultaneously observe changes in the coastline and changes in sea level in real time.

d) Step

The topographical data of the beach and the change data of the sea level obtained in the above step c) are compared with the stored terrestrial terrain data and the average sea level data in the corresponding area to detect the change of the terrain of the coastal area and the abnormal change of the sea level )

That is, the radar data and the elevation data of the land reference point P obtained in the step (a). Based on the average sea level data of the coastal area, the degree of lunar elevation and elevation of the corresponding coastal terrain acquired at c) and the elevation and elevation and elevation of the float (20) (Numerical data), it is possible to detect changes such as seashore erosion and sea level abnormalities such as sea level change (rise or fall) due to coastal anomalies, abnormal sea waves, wavy sea waves, To determine the state of the sea.

At this time, it is possible to output the coastline change value as the data by sensing the change of the terrain, or output the sea level change as the abnormal change of the sea level. In this case, the alarm system may be activated if the sea level abnormality change value is greater than the previously stored sea level abnormality change value.

After a plurality of floats 20 are installed on the coast of the coast, the land-based laser measuring instrument 10 measures the positional data with respect to the beach and the position with respect to each float 20 in the sea Since the data can be measured in real time at the same time, it is possible to quickly and easily grasp the abnormal phenomenon of the coast, and it is possible to build a system which can grasp the coastal disaster disaster in advance and warn.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, It is obvious to those who have. Accordingly, it should be understood that such modifications or alterations should not be understood individually from the technical spirit and viewpoint of the present invention, and that modified embodiments fall within the scope of the claims of the present invention.

10: Terrestrial laser measuring instrument 20: float
30: Shoreline change indicator
P, P1, P2: Land reference point

Claims (6)

delete a) Establish a land control point in the coastal area, if the national control point exists, set the national control point as the land control point, and if the national control point does not exist, set the land control point at the predetermined position, Obtaining a sea level reference and elevation data of the land reference point by performing a standing survey and a level survey to obtain average sea level data from tidal observation data of the coastal area;
b) installing an onshore laser measuring instrument at the land reference point when the land reference point is set through the step a), and installing at least one float on the sea of the coastal area; And
c) The terrestrial laser measuring device simultaneously measures the beach and the sea of the coastal area in real time, obtains the terrain height and the terrain elevation data as the terrain data of the beach, And acquiring change data of the sea level in real time through elevation or level data,
The step b)
Further comprising the step of providing a shoreline change indicator for the shoreline of said coastal area.
Real time anomaly observation method in coastal waters. 3. The method of claim 2,
The step c)
The method further comprises the step of outputting as an image or outputting numerical values of the radar and terrain elevation data of the land terrain obtained through the terrestrial laser measuring device and the elevation and elevation or elevation data of the float. As a result,
Real time anomaly observation method in coastal waters. The method according to claim 2 or 3,
The step c)
The terrestrial laser measurement system compares the topographical data of the beach and the sea level obtained by real-time measurement of the floods of the beach and the sea with the terrestrial terrain data and the average sea level data, The method comprising the steps of:
Real time anomaly observation method in coastal waters. 5. The method of claim 4,
The step c)
Detecting a change in the terrain of the coastal area, and outputting the shoreline change value as data.
Real time anomaly observation method in coastal waters. 5. The method of claim 4,
The step c)
Further comprising the step of outputting an abnormality of the sea level to the sea level abnormality change value and operating the alarm system if the sea level abnormality change value is greater than the previously stored sea level abnormality change value.
Real time anomaly observation method in coastal waters.

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