Percepatan tanah puncak: Perbedaan antara revisi

Percepatan horisontal puncak ({{lang-en|peak horizontal acceleration}}. disingkat PHA) merupakan percepatan tanah yang paling umum digunakan di dalam aplikasi kerekayasaan. Percepatan ini sering digunakan di dalam [[rekayasa kegempaan]] (seperti pada [[kode standar bangunan]] tahan gempa) dan pada umumnya diplot pada peta [[bahaya gempa]].<ref>{{Cite web|url = http://www.efehr.org:8080/jetspeed/portal/hazard.psml|title = The 2013 European Seismic Hazard Model (ESHM13)|date = 2013|access-date = 11 November 2015|publisher = EFEHR|last = European Facilities for Earthquake Hazard & Risk|archive-url = https://web.archive.org/web/20151227080447/http://www.efehr.org:8080/jetspeed/portal/hazard.psml|archive-date = 27 December 2015|url-status = dead}}</ref> Pada kejadian gempa bumi, kerusakan bangunan dan [[infrastruktur]] berkaitan lebih erat dengan gerak tanah yang diukur dalam percepatan tanah puncak dibandingkan dengan magnitudo gempa bumi itu sendiri. Pada gempa bumi berkekuatan menengah, percepatan tanah puncak menjadi penentu kerusakan. Sementara itu, pada gempa kuat, kerusakan lebih dipengaruhi oleh [[kecepatan tanah puncak]].<ref name=scibackintensity />

|245401

| 2,773 ''g'' <ref>{{cite web|url=http://nsmp.wr.usgs.gov/ekalkan/Tohoku/index.html|title=March 11, 2011 M9.0 Tohoku, Japan Earthquake: Preliminary results|author=Erol Kalkan|author2=Volkan Sevilgen|author2-link=Volkan Sevilgen|work=United States Geological Survey|date=17 Maret 2011|access-date=22 Maret 2011|archive-url=https://web.archive.org/web/20110324003222/http://nsmp.wr.usgs.gov/ekalkan/Tohoku/index.html|archive-date=24 March 2011}}</ref>|| 2,99 ''g''<ref name="kyoshin-bosai">{{cite web | url= https://www.kyoshin.bosai.go.jp/kyoshin/topics/html20110311144626/main_20110311144626.html | title=平成23年(2011年)東北地方太平洋沖地震による強震動| trans-title= About strong ground motion caused by the 2011 off the Pacific coast of Tohoku Earthquake |publisher=Kyoshin Bosai | access-date=10 November 2021 }}</ref><ref>{{cite web|title=2011 Off the Pacific Coast of Tohoku earthquake, Strong Ground Motion|url=http://www.k-net.bosai.go.jp/k-net/topics/TohokuTaiheiyo_20110311/nied_kyoshin1e.pdf|publisher=National Research Institute for Earth Science and Disaster Prevention|access-date=18 Maret 2011|archive-url=https://web.archive.org/web/20110324003616/http://www.k-net.bosai.go.jp/k-net/topics/TohokuTaiheiyo_20110311/nied_kyoshin1e.pdf|archive-date=24 March 2011}}</ref> || 9,1<ref name=M9.1Japan>{{cite web|url=https://earthquake.usgs.gov/earthquakes/eventpage/official20110311054624120_30/origin/detail|title=M 9.1 - 2011 Great Tohoku Earthquake, Japan - Origin|publisher=[[USGS]]|access-date=10 November 2021}}</ref>|| 30&nbsp;km<ref name="earthquake.usgs">{{cite web |url=https://earthquake.usgs.gov/earthquakes/eqarchives/year/2011/2011_stats.php |title=Archived copy of USGS Magnitude 7 and Greater Earthquakes in 2011 |access-date=8 September 2017 |archive-url=https://web.archive.org/web/20160413163214/http://earthquake.usgs.gov/earthquakes/eqarchives/year/2011/2011_stats.php |archive-date=13 April 2016 }}</ref> || 19.759<ref>{{cite web|url=https://www.fdma.go.jp/disaster/higashinihon/items/162.pdf |title=平成23年（2011年）東北地方太平洋沖地震（東日本大震災）について（第162報）（令和4年3月8日）|trans-title=Press release no. 162 of the 2011 Tohuku earthquake|work=総務省消防庁災害対策本部|trans-work=[[Badan Manajemen Bencana dan Kebakaran]]|archive-url=https://web.archive.org/web/20220827123449/https://www.fdma.go.jp/disaster/higashinihon/items/162.pdf|archive-date=2022-08-27 |access-date=23 September 2022}} Page 31 of the PDF file.</ref> || [[Gempa bumi dan tsunami Tōhoku 2011]]

|220.000–316,.000