Rapid estimation of tsunami source centroid location using a dense offshore observation network
This paper proposes a rapid method of estimating tsunami source locations using real‐time ocean‐bottom hydrostatic pressure data from a dense offshore observation network. We defined two characteristic locations representing the real‐time tsunami disturbance and the initial sea surface height distri...
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| Veröffentlicht in: | Geophysical research letters 2016-05, Vol.43 (9), p.4263-4269 |
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| container_title | Geophysical research letters |
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| creator | Yamamoto, N. Hirata, K. Aoi, S. Suzuki, W. Nakamura, H. Kunugi, T. |
| description | This paper proposes a rapid method of estimating tsunami source locations using real‐time ocean‐bottom hydrostatic pressure data from a dense offshore observation network. We defined two characteristic locations representing the real‐time tsunami disturbance and the initial sea surface height distribution. First, we defined the tsunami centroid location (TCL), which is the centroid location of the maximum absolute amplitude of the real‐time ocean‐bottom hydrostatic pressure changes. Second, we defined the centroid location of the absolute values of the initial sea surface height displacements. To determine whether the TCL can approximate the centroid location of the tsunami source, we examined approximately 1000 near‐field synthetic tsunami scenarios and a realistic tsunami scenario of the 2011 Tohoku earthquake in the Japan Trench. From these examinations, it was confirmed that in most scenarios, the TCLs obtained within a few minutes after the occurrence of an earthquake were close to the actual corresponding tsunami source locations.
Key Points
Simple and rapid real‐time method that estimates tsunami source location is proposed
Tsunami centroid location (TCL), which is the centroid location of the maximum real‐time absolute amplitudes of waveforms, is defined
The tsunami source location could be approximated by the TCL within a few minutes |
| doi_str_mv | 10.1002/2016GL068169 |
| format | Article |
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Key Points
Simple and rapid real‐time method that estimates tsunami source location is proposed
Tsunami centroid location (TCL), which is the centroid location of the maximum real‐time absolute amplitudes of waveforms, is defined
The tsunami source location could be approximated by the TCL within a few minutes</description><identifier>ISSN: 0094-8276</identifier><identifier>EISSN: 1944-8007</identifier><identifier>DOI: 10.1002/2016GL068169</identifier><language>eng</language><publisher>Washington: John Wiley & Sons, Inc</publisher><subject>Amplitudes ; Approximation ; Centroids ; Earthquakes ; Height ; Hydrostatic pressure ; Locations (working) ; Marine ; Ocean bottom ; Oceanic trenches ; Oceans ; Offshore ; Pressure ; Pressure changes ; Pressure data ; Real time ; Sea level ; Sea surface ; Seismic activity ; S‐net ; Temperature (air-sea) ; tsunami centroid location ; tsunami forecasting ; Tsunamis</subject><ispartof>Geophysical research letters, 2016-05, Vol.43 (9), p.4263-4269</ispartof><rights>2016. American Geophysical Union. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a5271-eae591195fc5295d500cf50f75366ff464344eea95b5f9e47f6124da111f633d3</citedby><cites>FETCH-LOGICAL-a5271-eae591195fc5295d500cf50f75366ff464344eea95b5f9e47f6124da111f633d3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2F2016GL068169$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2F2016GL068169$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,1427,11493,27901,27902,45550,45551,46384,46443,46808,46867</link.rule.ids></links><search><creatorcontrib>Yamamoto, N.</creatorcontrib><creatorcontrib>Hirata, K.</creatorcontrib><creatorcontrib>Aoi, S.</creatorcontrib><creatorcontrib>Suzuki, W.</creatorcontrib><creatorcontrib>Nakamura, H.</creatorcontrib><creatorcontrib>Kunugi, T.</creatorcontrib><title>Rapid estimation of tsunami source centroid location using a dense offshore observation network</title><title>Geophysical research letters</title><description>This paper proposes a rapid method of estimating tsunami source locations using real‐time ocean‐bottom hydrostatic pressure data from a dense offshore observation network. We defined two characteristic locations representing the real‐time tsunami disturbance and the initial sea surface height distribution. First, we defined the tsunami centroid location (TCL), which is the centroid location of the maximum absolute amplitude of the real‐time ocean‐bottom hydrostatic pressure changes. Second, we defined the centroid location of the absolute values of the initial sea surface height displacements. To determine whether the TCL can approximate the centroid location of the tsunami source, we examined approximately 1000 near‐field synthetic tsunami scenarios and a realistic tsunami scenario of the 2011 Tohoku earthquake in the Japan Trench. From these examinations, it was confirmed that in most scenarios, the TCLs obtained within a few minutes after the occurrence of an earthquake were close to the actual corresponding tsunami source locations.
Key Points
Simple and rapid real‐time method that estimates tsunami source location is proposed
Tsunami centroid location (TCL), which is the centroid location of the maximum real‐time absolute amplitudes of waveforms, is defined
The tsunami source location could be approximated by the TCL within a few minutes</description><subject>Amplitudes</subject><subject>Approximation</subject><subject>Centroids</subject><subject>Earthquakes</subject><subject>Height</subject><subject>Hydrostatic pressure</subject><subject>Locations (working)</subject><subject>Marine</subject><subject>Ocean bottom</subject><subject>Oceanic trenches</subject><subject>Oceans</subject><subject>Offshore</subject><subject>Pressure</subject><subject>Pressure changes</subject><subject>Pressure data</subject><subject>Real time</subject><subject>Sea level</subject><subject>Sea surface</subject><subject>Seismic activity</subject><subject>S‐net</subject><subject>Temperature (air-sea)</subject><subject>tsunami centroid location</subject><subject>tsunami forecasting</subject><subject>Tsunamis</subject><issn>0094-8276</issn><issn>1944-8007</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNqN0U1LHEEQBuAmKGSj3vIDBnLJIatV_d3HIHEVFgTRc9POVCdjZqc33TMR_70dJgfxIJ6qDk8V1FuMfUY4RQB-xgH1ZgvaonYf2AqdlGsLYA7YCsDVnhv9kX0q5QEABAhcMX8T9n3XUJn6XZj6NDYpNlOZx7Drm5Lm3FLT0jjlVNWQ2sXMpR9_NqHpaCxUJ2L5lXJt7gvlvwsZaXpM-fcxO4xhKHTyvx6xu4sft-eX6-315ur8-3YdFDe4pkDKIToVW8Wd6hRAGxVEo4TWMUothZREwal7FR1JEzVy2QVEjFqIThyxr8vefU5_5nqO3_WlpWEII6W5eLRc1S1K2HdQsAa11Vjpl1f0oUYy1kM8r4EDGm7NWwqNQ24VKlfVt0W1OZWSKfp9rpnnJ4_g_73Pv3xf5Xzhj_1AT29av7nZKsktimdXcZnJ</recordid><startdate>20160516</startdate><enddate>20160516</enddate><creator>Yamamoto, N.</creator><creator>Hirata, K.</creator><creator>Aoi, S.</creator><creator>Suzuki, W.</creator><creator>Nakamura, H.</creator><creator>Kunugi, T.</creator><general>John Wiley & Sons, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>7TN</scope><scope>8FD</scope><scope>F1W</scope><scope>FR3</scope><scope>H8D</scope><scope>H96</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope><scope>L7M</scope></search><sort><creationdate>20160516</creationdate><title>Rapid estimation of tsunami source centroid location using a dense offshore observation network</title><author>Yamamoto, N. ; Hirata, K. ; Aoi, S. ; Suzuki, W. ; Nakamura, H. ; Kunugi, T.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a5271-eae591195fc5295d500cf50f75366ff464344eea95b5f9e47f6124da111f633d3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Amplitudes</topic><topic>Approximation</topic><topic>Centroids</topic><topic>Earthquakes</topic><topic>Height</topic><topic>Hydrostatic pressure</topic><topic>Locations (working)</topic><topic>Marine</topic><topic>Ocean bottom</topic><topic>Oceanic trenches</topic><topic>Oceans</topic><topic>Offshore</topic><topic>Pressure</topic><topic>Pressure changes</topic><topic>Pressure data</topic><topic>Real time</topic><topic>Sea level</topic><topic>Sea surface</topic><topic>Seismic activity</topic><topic>S‐net</topic><topic>Temperature (air-sea)</topic><topic>tsunami centroid location</topic><topic>tsunami forecasting</topic><topic>Tsunamis</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yamamoto, N.</creatorcontrib><creatorcontrib>Hirata, K.</creatorcontrib><creatorcontrib>Aoi, S.</creatorcontrib><creatorcontrib>Suzuki, W.</creatorcontrib><creatorcontrib>Nakamura, H.</creatorcontrib><creatorcontrib>Kunugi, T.</creatorcontrib><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Technology Research Database</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Geophysical research letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yamamoto, N.</au><au>Hirata, K.</au><au>Aoi, S.</au><au>Suzuki, W.</au><au>Nakamura, H.</au><au>Kunugi, T.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Rapid estimation of tsunami source centroid location using a dense offshore observation network</atitle><jtitle>Geophysical research letters</jtitle><date>2016-05-16</date><risdate>2016</risdate><volume>43</volume><issue>9</issue><spage>4263</spage><epage>4269</epage><pages>4263-4269</pages><issn>0094-8276</issn><eissn>1944-8007</eissn><abstract>This paper proposes a rapid method of estimating tsunami source locations using real‐time ocean‐bottom hydrostatic pressure data from a dense offshore observation network. We defined two characteristic locations representing the real‐time tsunami disturbance and the initial sea surface height distribution. First, we defined the tsunami centroid location (TCL), which is the centroid location of the maximum absolute amplitude of the real‐time ocean‐bottom hydrostatic pressure changes. Second, we defined the centroid location of the absolute values of the initial sea surface height displacements. To determine whether the TCL can approximate the centroid location of the tsunami source, we examined approximately 1000 near‐field synthetic tsunami scenarios and a realistic tsunami scenario of the 2011 Tohoku earthquake in the Japan Trench. From these examinations, it was confirmed that in most scenarios, the TCLs obtained within a few minutes after the occurrence of an earthquake were close to the actual corresponding tsunami source locations.
Key Points
Simple and rapid real‐time method that estimates tsunami source location is proposed
Tsunami centroid location (TCL), which is the centroid location of the maximum real‐time absolute amplitudes of waveforms, is defined
The tsunami source location could be approximated by the TCL within a few minutes</abstract><cop>Washington</cop><pub>John Wiley & Sons, Inc</pub><doi>10.1002/2016GL068169</doi><tpages>7</tpages><oa>free_for_read</oa></addata></record> |
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| source | Wiley-Blackwell AGU Digital Library; Wiley Online Library Journals Frontfile Complete; Wiley Online Library Free Content; EZB-FREE-00999 freely available EZB journals |
| subjects | Amplitudes Approximation Centroids Earthquakes Height Hydrostatic pressure Locations (working) Marine Ocean bottom Oceanic trenches Oceans Offshore Pressure Pressure changes Pressure data Real time Sea level Sea surface Seismic activity S‐net Temperature (air-sea) tsunami centroid location tsunami forecasting Tsunamis |
| title | Rapid estimation of tsunami source centroid location using a dense offshore observation network |
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