Relocation of earthquakes in the Northeast Indian region using joint hypocentre determination method

A set of 1941 earthquake events recorded in the northeast region of India during January 1993 – December 1999 was used for relocation by the Joint Hypocentre Determination (JHD) technique. We have utilized both P- and S-wave arrivals recorded by closely spaced 77 temporary and permanent seismic stat...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Current science (Bangalore) 2005-10, Vol.89 (8), p.1404-1413
Hauptverfasser: Bhattacharya, Pankaj Mala, Pujol, Jose, Majumdar, R. K., Kayal, J. R.
Format: Artikel
Sprache:eng
Schlagworte:
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
container_end_page 1413
container_issue 8
container_start_page 1404
container_title Current science (Bangalore)
container_volume 89
creator Bhattacharya, Pankaj Mala
Pujol, Jose
Majumdar, R. K.
Kayal, J. R.
description A set of 1941 earthquake events recorded in the northeast region of India during January 1993 – December 1999 was used for relocation by the Joint Hypocentre Determination (JHD) technique. We have utilized both P- and S-wave arrivals recorded by closely spaced 77 temporary and permanent seismic stations in the region. Results of this analysis show that (a) the average root mean square travel time residual becomes smaller than the corresponding single event locations by the HYP071; (b) station correction varies from -2.43 to 2.32 s for P-wave, and from -2.84 to 2.84 s for S-wave, indicating large crustal velocity variations in the region; (c) positive station corrections are obtained in the Shillong Plateau, Assam valley and in the Manipur fold belt, and negative station corrections are obtained in the Mikir hills, and (d) lateral variation of the velocity structure inferred from station corrections is comparable with that obtained by 3D velocity inversion using the local earthquake tomography method.
format Article
fullrecord <record><control><sourceid>jstor_proqu</sourceid><recordid>TN_cdi_proquest_miscellaneous_29810776</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><jstor_id>24110847</jstor_id><sourcerecordid>24110847</sourcerecordid><originalsourceid>FETCH-LOGICAL-j208t-d9a87d4888b6073df9718b55c3004451ef95a3ee43514714db47f03085589d333</originalsourceid><addsrcrecordid>eNotzM9LwzAYxvEeFJzTP0HIyVvhTZMsyVGGPwZDQfRc0ubtmtomXZIe9t87macHHj58r4oVAKUlU5reFLcpDQAVq0CvCvuJY2hNdsGT0BE0MffHxfxgIs6T3CN5D-cLTcpk560znkQ8_OklOX8gQ3A-k_40hxZ9jkgsZoyT85fkhLkP9q647syY8P5_18X3y_PX9q3cf7zutk_7cqhA5dJqo6TlSqlmA5LZTkuqGiFaBsC5oNhpYRgiZ4JySbltuOyAgRJCacsYWxePl-4cw3HBlOvJpRbH0XgMS6orrShIuTnDhwscUg6xnqObTDzVFacUFJfsF-OBXIA</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>29810776</pqid></control><display><type>article</type><title>Relocation of earthquakes in the Northeast Indian region using joint hypocentre determination method</title><source>Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals</source><source>JSTOR Archive Collection A-Z Listing</source><creator>Bhattacharya, Pankaj Mala ; Pujol, Jose ; Majumdar, R. K. ; Kayal, J. R.</creator><creatorcontrib>Bhattacharya, Pankaj Mala ; Pujol, Jose ; Majumdar, R. K. ; Kayal, J. R.</creatorcontrib><description>A set of 1941 earthquake events recorded in the northeast region of India during January 1993 – December 1999 was used for relocation by the Joint Hypocentre Determination (JHD) technique. We have utilized both P- and S-wave arrivals recorded by closely spaced 77 temporary and permanent seismic stations in the region. Results of this analysis show that (a) the average root mean square travel time residual becomes smaller than the corresponding single event locations by the HYP071; (b) station correction varies from -2.43 to 2.32 s for P-wave, and from -2.84 to 2.84 s for S-wave, indicating large crustal velocity variations in the region; (c) positive station corrections are obtained in the Shillong Plateau, Assam valley and in the Manipur fold belt, and negative station corrections are obtained in the Mikir hills, and (d) lateral variation of the velocity structure inferred from station corrections is comparable with that obtained by 3D velocity inversion using the local earthquake tomography method.</description><identifier>ISSN: 0011-3891</identifier><language>eng</language><publisher>Current Science Association</publisher><subject>Earthquakes ; Estimation methods ; Low speed ; Plateaus ; RESEARCH COMMUNICATIONS ; Tectonics ; Tectonophysics ; Tomography ; Travel time ; Zero</subject><ispartof>Current science (Bangalore), 2005-10, Vol.89 (8), p.1404-1413</ispartof><rights>2005 Current Science Association</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.jstor.org/stable/pdf/24110847$$EPDF$$P50$$Gjstor$$H</linktopdf><linktohtml>$$Uhttps://www.jstor.org/stable/24110847$$EHTML$$P50$$Gjstor$$H</linktohtml><link.rule.ids>315,782,786,805,58024,58257</link.rule.ids></links><search><creatorcontrib>Bhattacharya, Pankaj Mala</creatorcontrib><creatorcontrib>Pujol, Jose</creatorcontrib><creatorcontrib>Majumdar, R. K.</creatorcontrib><creatorcontrib>Kayal, J. R.</creatorcontrib><title>Relocation of earthquakes in the Northeast Indian region using joint hypocentre determination method</title><title>Current science (Bangalore)</title><description>A set of 1941 earthquake events recorded in the northeast region of India during January 1993 – December 1999 was used for relocation by the Joint Hypocentre Determination (JHD) technique. We have utilized both P- and S-wave arrivals recorded by closely spaced 77 temporary and permanent seismic stations in the region. Results of this analysis show that (a) the average root mean square travel time residual becomes smaller than the corresponding single event locations by the HYP071; (b) station correction varies from -2.43 to 2.32 s for P-wave, and from -2.84 to 2.84 s for S-wave, indicating large crustal velocity variations in the region; (c) positive station corrections are obtained in the Shillong Plateau, Assam valley and in the Manipur fold belt, and negative station corrections are obtained in the Mikir hills, and (d) lateral variation of the velocity structure inferred from station corrections is comparable with that obtained by 3D velocity inversion using the local earthquake tomography method.</description><subject>Earthquakes</subject><subject>Estimation methods</subject><subject>Low speed</subject><subject>Plateaus</subject><subject>RESEARCH COMMUNICATIONS</subject><subject>Tectonics</subject><subject>Tectonophysics</subject><subject>Tomography</subject><subject>Travel time</subject><subject>Zero</subject><issn>0011-3891</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><recordid>eNotzM9LwzAYxvEeFJzTP0HIyVvhTZMsyVGGPwZDQfRc0ubtmtomXZIe9t87macHHj58r4oVAKUlU5reFLcpDQAVq0CvCvuJY2hNdsGT0BE0MffHxfxgIs6T3CN5D-cLTcpk560znkQ8_OklOX8gQ3A-k_40hxZ9jkgsZoyT85fkhLkP9q647syY8P5_18X3y_PX9q3cf7zutk_7cqhA5dJqo6TlSqlmA5LZTkuqGiFaBsC5oNhpYRgiZ4JySbltuOyAgRJCacsYWxePl-4cw3HBlOvJpRbH0XgMS6orrShIuTnDhwscUg6xnqObTDzVFacUFJfsF-OBXIA</recordid><startdate>20051025</startdate><enddate>20051025</enddate><creator>Bhattacharya, Pankaj Mala</creator><creator>Pujol, Jose</creator><creator>Majumdar, R. K.</creator><creator>Kayal, J. R.</creator><general>Current Science Association</general><scope>7SM</scope><scope>7U5</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>20051025</creationdate><title>Relocation of earthquakes in the Northeast Indian region using joint hypocentre determination method</title><author>Bhattacharya, Pankaj Mala ; Pujol, Jose ; Majumdar, R. K. ; Kayal, J. R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-j208t-d9a87d4888b6073df9718b55c3004451ef95a3ee43514714db47f03085589d333</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Earthquakes</topic><topic>Estimation methods</topic><topic>Low speed</topic><topic>Plateaus</topic><topic>RESEARCH COMMUNICATIONS</topic><topic>Tectonics</topic><topic>Tectonophysics</topic><topic>Tomography</topic><topic>Travel time</topic><topic>Zero</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Bhattacharya, Pankaj Mala</creatorcontrib><creatorcontrib>Pujol, Jose</creatorcontrib><creatorcontrib>Majumdar, R. K.</creatorcontrib><creatorcontrib>Kayal, J. R.</creatorcontrib><collection>Earthquake Engineering Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Current science (Bangalore)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Bhattacharya, Pankaj Mala</au><au>Pujol, Jose</au><au>Majumdar, R. K.</au><au>Kayal, J. R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Relocation of earthquakes in the Northeast Indian region using joint hypocentre determination method</atitle><jtitle>Current science (Bangalore)</jtitle><date>2005-10-25</date><risdate>2005</risdate><volume>89</volume><issue>8</issue><spage>1404</spage><epage>1413</epage><pages>1404-1413</pages><issn>0011-3891</issn><abstract>A set of 1941 earthquake events recorded in the northeast region of India during January 1993 – December 1999 was used for relocation by the Joint Hypocentre Determination (JHD) technique. We have utilized both P- and S-wave arrivals recorded by closely spaced 77 temporary and permanent seismic stations in the region. Results of this analysis show that (a) the average root mean square travel time residual becomes smaller than the corresponding single event locations by the HYP071; (b) station correction varies from -2.43 to 2.32 s for P-wave, and from -2.84 to 2.84 s for S-wave, indicating large crustal velocity variations in the region; (c) positive station corrections are obtained in the Shillong Plateau, Assam valley and in the Manipur fold belt, and negative station corrections are obtained in the Mikir hills, and (d) lateral variation of the velocity structure inferred from station corrections is comparable with that obtained by 3D velocity inversion using the local earthquake tomography method.</abstract><pub>Current Science Association</pub><tpages>10</tpages></addata></record>
fulltext fulltext
identifier ISSN: 0011-3891
ispartof Current science (Bangalore), 2005-10, Vol.89 (8), p.1404-1413
issn 0011-3891
language eng
recordid cdi_proquest_miscellaneous_29810776
source Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; JSTOR Archive Collection A-Z Listing
subjects Earthquakes
Estimation methods
Low speed
Plateaus
RESEARCH COMMUNICATIONS
Tectonics
Tectonophysics
Tomography
Travel time
Zero
title Relocation of earthquakes in the Northeast Indian region using joint hypocentre determination method
url https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-04T15%3A10%3A14IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-jstor_proqu&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Relocation%20of%20earthquakes%20in%20the%20Northeast%20Indian%20region%20using%20joint%20hypocentre%20determination%20method&rft.jtitle=Current%20science%20(Bangalore)&rft.au=Bhattacharya,%20Pankaj%20Mala&rft.date=2005-10-25&rft.volume=89&rft.issue=8&rft.spage=1404&rft.epage=1413&rft.pages=1404-1413&rft.issn=0011-3891&rft_id=info:doi/&rft_dat=%3Cjstor_proqu%3E24110847%3C/jstor_proqu%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=29810776&rft_id=info:pmid/&rft_jstor_id=24110847&rfr_iscdi=true