JP5587101B2 - Method for estimating seismic motion at locations where seismometers are not installed - Google Patents
Method for estimating seismic motion at locations where seismometers are not installed Download PDFInfo
- Publication number
- JP5587101B2 JP5587101B2 JP2010193138A JP2010193138A JP5587101B2 JP 5587101 B2 JP5587101 B2 JP 5587101B2 JP 2010193138 A JP2010193138 A JP 2010193138A JP 2010193138 A JP2010193138 A JP 2010193138A JP 5587101 B2 JP5587101 B2 JP 5587101B2
- Authority
- JP
- Japan
- Prior art keywords
- seismometer
- ground
- installation
- seismometers
- motion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Geophysics And Detection Of Objects (AREA)
Description
本発明は、地震計の新設・移設後の地震動を推定することにより、地震警報の出力状況を推定することができ、新設・移設の効果を定量的に把握することができる、地震計が設置されていない地点における地震動の推定方法に関するものである。 The present invention can estimate the output status of the earthquake warning by estimating the seismic motion after the new installation / relocation of the seismometer , and quantitatively grasp the effect of the new installation / relocation. It relates to a method for estimating seismic motion at a location that is not .
図２は地震の概略過程を示す模式図である。 FIG. 2 is a schematic diagram showing an outline process of an earthquake.
この図において、１０１は震源、１０２は基盤、１０３は表層地盤、１０４は地表である。 In this figure, 101 is the epicenter, 102 is the base, 103 is the surface ground, and 104 is the ground.
震源１０１で地震が発生すると（震源過程Ａ）、地震動は基盤１０２を介して伝播し（伝播過程Ｂ）、表層地盤１０３で増幅されて（増幅過程Ｃ）、最終的に震動Ｄとして地表１０４に現れる。
When an earthquake occurs in the epicenter 101 (seismic process A), the ground motion propagates through the base 102 (propagation process B), is amplified by the surface ground 103 (amplification process C), and finally becomes
従来、評価対象地点の地震の被害推定方法の提案がなされている（下記特許文献１参照）。また、常時微動のＨ／Ｖスペクトル比を用いた地震動推定法の提案がなされている（下記非特許文献１参照）。
Conventionally, an earthquake damage estimation method at an evaluation target point has been proposed (see
しかしながら、地震計の新設や移設を行う場合、地盤調査などは行われているが、地震計設置後の地震動の特性がどのようなものであるかを推定することは行われていない。 However, when a seismometer is newly installed or moved, ground surveys have been carried out, but it has not been estimated what the characteristics of the seismic motion after the seismometer is installed.
本発明は、上記状況に鑑みて、地盤調査結果を有効に利用して地震計の新設や移設を行った後の地震動の推定を的確に行い、鉄道や道路などへの警報出力を地震計を新設や移設する前に把握することができる、地震計の新設や移設を行った後の地震動の推定方法を提供することを目的とする。 In view of the above situation, the present invention accurately uses the ground survey results to accurately estimate seismic motion after newly installing or moving seismometers, and outputs alarm outputs to railways and roads. The purpose is to provide a method for estimating seismic motion after a new seismometer is installed or moved, which can be grasped before the new installation or move.
本発明は、上記目的を達成するために、
〔１〕地震計が設置されていない地点における地震動の推定方法において、互いに近接する地震計設置箇所と地震計設置予定箇所とにおける地震動の増幅特性をそれぞれ常時微動のＨ／Ｖスペクトルから予め求めておき、前記地震計設置箇所および前記地震計設置予定箇所の基盤が共通であり、この基盤から入力する地震動が共通である場合、前記地震計設置箇所および前記地震計設置予定箇所のＨ／Ｖスペクトルの比を地盤増幅度Ｒとして、前記地震計設置予定箇所の地震動Ｓ Y （ｆ）を前記地震計設置箇所の地震動Ｓ X （ｆ）に前記地盤増幅度Ｒを乗ずることにより推定することを特徴とする。
In order to achieve the above object, the present invention provides
[1] In the method of estimating the ground motion at the point where seismometer is not installed, is previously obtained from the H / V spectra Microtremor respective amplification characteristics of the ground motion at the seismometers installation locations and seismometers planned installation place close to each other In addition, when the bases of the seismometer installation location and the seismometer installation planned location are common and the seismic motion input from this base is common, the H / V spectrum of the seismometer installation location and the seismometer installation planned location characterized in a ratio as site amplification degree R, to estimate by multiplying said ground amplification factor R to ground motion S Y (f) of the seismometers placed planned portion to ground motion S X (f) of the seismometer locations And
本発明によれば、新設・移設後の地震動を推定することにより、地震警報の出力状況等を推定することができ、新設・移設の効果を定量的に把握することができる。 According to the present invention, it is possible to estimate the output status of an earthquake warning, etc. by estimating the seismic motion after the new installation / relocation, and quantitatively grasp the effects of the new installation / relocation.
例えば、地震計を増設することにより、鉄道や道路などの運転規制回数がどの程度増加するか、あるいは、地震計を移設することにより、運転規制回数がどの程度減少するかを見積もることができる。 For example, it is possible to estimate how many times the number of operation restrictions on railways, roads, and the like increases by installing more seismometers, or how much the number of operation restrictions decreases by moving seismometers.
本発明の地震計が設置されていない地点における地震動の推定方法は、互いに近接する地震計設置箇所と地震計設置予定箇所とにおける地震動の増幅特性をそれぞれ常時微動のＨ／Ｖスペクトルから予め求めておき、前記地震計設置箇所および前記地震計設置予定箇所の基盤が共通であり、この基盤から入力する地震動が共通である場合、前記地震計設置箇所および前記地震計設置予定箇所のＨ／Ｖスペクトルの比を地盤増幅度Ｒとして、前記地震計設置予定箇所の地震動Ｓ Y （ｆ）を前記地震計設置箇所の地震動Ｓ X （ｆ）に前記地盤増幅度Ｒを乗ずることにより推定する。 Method of estimating ground motion at the point where seismometer is not installed in the present invention, obtained in advance from the H / V spectra Microtremor respective amplification characteristics of the ground motion at the seismometers installation locations and seismometers planned installation place close to each other In addition, when the bases of the seismometer installation location and the seismometer installation planned location are common and the seismic motion input from this base is common, the H / V spectrum of the seismometer installation location and the seismometer installation planned location Is the ground amplification degree R , and the ground motion S Y (f) at the location where the seismometer is scheduled to be installed is estimated by multiplying the ground motion S X (f) at the location where the seismometer is installed by the ground amplification degree R.
以下、本発明の実施の形態について詳細に説明する。 Hereinafter, embodiments of the present invention will be described in detail.
図１は本発明の実施例を示す地震計が設置されていない地点における地震動の推定方法の模式図である。 FIG. 1 is a schematic diagram of a method for estimating seismic motion at a point where a seismometer is not installed according to an embodiment of the present invention.
この図において、１は地震動が入力する基盤、２は表層地盤、３は地表、４は地震計が設置されている地表３の場所（ＳｉｔｅＸ）、５は地震計が設置されていない地表３の場所（ＳｉｔｅＹ）である。
In this figure, 1 is the base where earthquake motion is input, 2 is the surface ground, 3 is the ground, 4 is the location of the
互いに近接する地震計設置箇所としてのＳｉｔｅＸと地震計設置予定箇所としてのＳｉｔｅＹとにおける地震動は、
ＳX （ｆ）＝Ｂ（ｆ）×ＧX （ｆ）
ＳY （ｆ）＝Ｂ（ｆ）×ＧY （ｆ）
基盤１から入力する地震動が共通の場合、
ＳX （ｆ）／ＳY （ｆ）＝ＧX （ｆ）／ＧY （ｆ）＝Ｒ
このとき、Ｒ（ｆ）＝ＧY （ｆ）／ＧX （ｆ）をＳｉｔｅＸとＳｉｔｅＹのＨ／Ｖスペクトルの比として事前に求めておくことにより、ＳY （ｆ）＝ＳX （ｆ）×Ｒとして求めることができる。
The seismic motion at SiteX as the seismometer installation location and SiteY as the seismometer installation location close to each other is
S X (f) = B (f) × G X (f)
S Y (f) = B (f) × G Y (f)
When the ground motion input from the
S X (f) / S Y (f) = G X (f) / G Y (f) = R
At this time, R (f) = G Y (f) / G X (f) is obtained in advance as the ratio of the H / V spectrum of SiteX and SiteY, so that S Y (f) = S X (f) XR can be obtained.
このように、地震計の新設・移設後の地震動を推定することにより、地震警報の出力状況等を推定することができ、新設・移設の効果を定量的に把握することができる。例えば、地震計を増設することにより、鉄道や道路などの運転規制回数がどの程度増加するか、あるいは、地震計を移設することにより、運転規制回数がどの程度減少するかを見積もることができる。 Thus, by estimating the seismic motion after the new installation / relocation of the seismometer, it is possible to estimate the output status of the earthquake warning and to quantitatively grasp the effects of the new installation / relocation. For example, it is possible to estimate how many times the number of operation restrictions on railways, roads, and the like increases by installing more seismometers, or how much the number of operation restrictions decreases by moving seismometers.
なお、地震計設置箇所および地震計設置予定箇所の基盤が共通であるか否かは、文献やインターネット等により予め調査しておく。 In addition, whether the bases of the seismometer installation location and the seismometer installation planned location are common is investigated in advance by literature or the Internet.
また、互いに近接する地震計設置箇所の距離は、基盤１に入力する地震動が同一の範囲として定めることができる。したがって、基盤１に入力する地震動が同一の範囲が広い場合には、数ｋｍ〜１０数ｋｍに及ぶ距離となることもある。
Further, the distance between the seismometer installation locations that are close to each other can be determined as the same range of the seismic motion input to the
なお、本発明は上記実施例に限定されるものではなく、本発明の趣旨に基づき種々の変形が可能であり、これらを本発明の範囲から排除するものではない。 In addition, this invention is not limited to the said Example, Based on the meaning of this invention, a various deformation | transformation is possible and these are not excluded from the scope of the present invention.
本発明の地震計が設置されていない地点における地震動の推定方法は、地盤調査結果を有効に利用して地震計を新設や移設した後の地点における地震動の推定を的確に行い、鉄道や道路などへの警報出力を地震計を新設や移設する前に把握することができる。 The method for estimating the ground motion at a point where the seismometer of the present invention is not installed is an effective method for estimating ground motion at a point after the seismometer is newly installed or relocated by effectively using the ground survey results, such as railways and roads. Can be grasped before the seismometer is newly installed or moved.
１ 地震が発生する基盤
２ 表層地盤
３ 地表
４ 地震計が設置されている地表の場所（ＳｉｔｅＸ）
５ 地震計が設置されていない地表の場所（ＳｉｔｅＹ）
1 Base where earthquake occurs 2
5 Location on the surface of the earth where no seismometer is installed (SiteY)
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010193138A JP5587101B2 (en) | 2010-08-31 | 2010-08-31 | Method for estimating seismic motion at locations where seismometers are not installed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010193138A JP5587101B2 (en) | 2010-08-31 | 2010-08-31 | Method for estimating seismic motion at locations where seismometers are not installed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2012052814A JP2012052814A (en) | 2012-03-15 |
| JP5587101B2 true JP5587101B2 (en) | 2014-09-10 |
Family
ID=45906311
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2010193138A Expired - Fee Related JP5587101B2 (en) | 2010-08-31 | 2010-08-31 | Method for estimating seismic motion at locations where seismometers are not installed |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP5587101B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014066570A (en) * | 2012-09-25 | 2014-04-17 | Railway Technical Research Institute | Earthquake motion real time estimation method for seismometer non-installation site |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0627862B2 (en) * | 1986-07-12 | 1994-04-13 | 財団法人鉄道総合技術研究所 | Surface layer characteristics detector |
| JP3006704B2 (en) * | 1993-11-22 | 2000-02-07 | 株式会社熊谷組 | Evaluation method of seismic wave amplification characteristics of surface ground |
| JPH11183630A (en) * | 1997-12-22 | 1999-07-09 | Osaka Gas Co Ltd | Method for evaluating amplification characteristic of ground at earthquake |
| JPH11231064A (en) * | 1998-02-12 | 1999-08-27 | Osaka Gas Co Ltd | Earthquake motion estimating method |
| JP3794666B2 (en) * | 1998-10-14 | 2006-07-05 | 大阪瓦斯株式会社 | How to shut off gas during an earthquake in an earthquake block |
| JP2002168963A (en) * | 2000-12-01 | 2002-06-14 | Toshiba Corp | Earthquake damage estimation evaluation system |
| JP2008249485A (en) * | 2007-03-30 | 2008-10-16 | Railway Technical Res Inst | Method of estimating earthquake damage in evaluation objective point |
-
2010
- 2010-08-31 JP JP2010193138A patent/JP5587101B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2012052814A (en) | 2012-03-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Foti et al. | Guidelines for the good practice of surface wave analysis: a product of the InterPACIFIC project | |
| Boaga et al. | Mode misidentification in Rayleigh waves: Ellipticity as a cause and a cure | |
| Meng et al. | Seismicity around Parkfield correlates with static shear stress changes following the 2003 Mw6. 5 San Simeon earthquake | |
| Battaglia et al. | Earthquake‐volcano interaction imaged by coda wave interferometry | |
| Wu et al. | A test of earthquake early warning system using low cost accelerometer in Hualien, Taiwan | |
| Theodoulidis et al. | Basin effects on ground motion: the case of a high-resolution experiment in Cephalonia (Greece) | |
| WO2019082292A1 (en) | Internal structure grasping system | |
| JP2014169960A (en) | Method of predicting arrival time of principal shock of earthquake | |
| JP4506625B2 (en) | Earthquake motion prediction system using real-time earthquake information | |
| Cornou et al. | Ambient noise energy bursts observation and modeling: Trapping of harmonic structure-soil induced–waves in a topmost sedimentary layer | |
| JP4385948B2 (en) | Real-time earthquake response waveform estimation method using real-time earthquake information | |
| EP2818896A3 (en) | Method and apparatus for estimating a parameter of a subsurface volume | |
| Karatzetzou et al. | Ambient vibration measurements on monuments in the Medieval City of Rhodes, Greece | |
| JP5587101B2 (en) | Method for estimating seismic motion at locations where seismometers are not installed | |
| JP5705692B2 (en) | Simple magnitude estimation method using time to maximum earthquake amplitude | |
| JP6891001B2 (en) | Seismic intensity distribution estimation method and estimation system | |
| Fäh et al. | The earthquake of 250 AD in Augusta Raurica, A real event with a 3D site-effect? | |
| Hoult et al. | The 2012 Moe earthquake and earthquake attenuation in south eastern Australia | |
| JP5313706B2 (en) | Earthquake motion waveform estimation method | |
| Hobiger et al. | Site characterization in the framework of the renewal of the Swiss strong motion network (SSMNet) | |
| Bignardi et al. | Free and improved computer codes for HVSR processing and inversions | |
| JP2008249485A (en) | Method of estimating earthquake damage in evaluation objective point | |
| Yang et al. | A prediction model for horizontal run-out distance of landslides triggered by Wenchuan earthquake | |
| Yenier* et al. | Induced-seismicity monitoring: Broadband seismometers and geophone comparison | |
| WO2016135868A1 (en) | Sensor evaluation device, sensor evaluation system, and sensor evaluation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A621 | Written request for application examination |
Free format text: JAPANESE INTERMEDIATE CODE: A621 Effective date: 20130124 |
|
| A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20130920 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20131022 |
|
| A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20131115 |
|
| A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20140520 |
|
| TRDD | Decision of grant or rejection written | ||
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20140722 |
|
| A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20140723 |
|
| R150 | Certificate of patent or registration of utility model |
Ref document number: 5587101 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
| LAPS | Cancellation because of no payment of annual fees |