Building damage survey and microtremor measurements for the source region of the 2015 Gorkha, Nepal, earthquake

• Material Type: 記事
• Title: Building damage survey and microtremor measurements for the source region of the 2015 Gorkha, Nepal, earthquake
• Author/Editor: Masumi Yamada; Takumi Hayashida; Jim Mori
• Publication, Distribution, etc.: 日本 : Springer science+business media
• Publication Date: 2016-07-13
• Publication Date (W3CDTF): 2016-07-13
• Periodical title: EPS : Earth, Planets and Space
• No. or year of volume/issue: 68(117)
• Volume: 68(117)
• ISSN (Periodical Title): 1880-5981
• ISSN-L (Periodical Title): 1343-8832
• Text Language Code: eng
• DOI: 10.1186/s40623-016-0483-4; https://doi.org/10.1186/s40623-016-0483-4
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• Date Accepted (W3CDTF): 2016-09-08T09:53:02+09:00
• Date Captured (W3CDTF): 2016-08-26
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• Summary, etc.: We performed a damage survey of buildings and carried out microtremor observations in the source region of the 2015 Gorkha earthquake. Our survey area spans the Kathmandu valley and areas to the east and north of the valley. Damage of buildings in the Kathmandu valley was localized, and the percentage of the totally collapsed buildings was less than 5 %. East of the Kathmandu valley, especially in Sindhupalchok district, damage of buildings was more severe. In the center of Chautara and Bahrabise, towns in Sindhupalchok district, the percentage of the totally collapsed houses exceeded 40 %. North of the Kathmandu valley, the damage was moderate, and 20–30 % of the buildings were totally collapsed in Dhunche. Based on the past studies and our microtremor observations near the strong motion station, the H/V spectrum in Kathmandu has a peak at around 0.3 Hz, which reflects the velocity contrast of the deep sedimentary basin. The H/V spectra in Bahrabise, Chautara, and Dhunche do not show clear peaks, which suggests that the sites have stiff soil conditions. Therefore, the more severe damage outside the Kathmandu valley compared with the relatively light damage levels in the valley is probably due to the source characteristics of the earthquake and/or the seismic performance of buildings, rather than the local site conditions.
• DOI: 10.1186/s40623-016-0483-4; https://doi.org/10.1186/s40623-016-0483-4
• Access Restrictions: インターネット公開
• Rights (production): © 2016 The Author(s). This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
• Related Material (URI): http://hdl.handle.net/2433/218219; http://id.ndl.go.jp/digimeta/10193194; https://dl.ndl.go.jp/pid/10193194; http://link.springer.com/content/pdf/10.1186/s40623-016-0483-4.pdf; http://link.springer.com/article/10.1186/s40623-016-0483-4/fulltext.html; http://link.springer.com/content/pdf/10.1186/s40623-016-0483-4
• Is Referenced By: Investigation of microtremors observed at historic masonry townhouse buildings after Nepal earthquake; https://cir.nii.ac.jp/crid/1050575520348936448; 耐震指標に基づく発展途上国RC造建築の費用対効果の高い耐震補強戦略; https://cir.nii.ac.jp/crid/1390857910472587136; Special issue "the 2015 Gorkha, Nepal, earthquake and Himalayan studies : First results"; https://cir.nii.ac.jp/crid/2050588891960741120
• References: Strong ground motion in the Kathmandu Valley during the 2015 Gorkha, Nepal, earthquake; https://cir.nii.ac.jp/crid/1050869456408682240; Geological database for liquefaction hazard analysis in the Kathmandu valley, Nepal; https://cir.nii.ac.jp/crid/1360016870106537088; Basement topography of the Kathmandu Basin using microtremor observation; https://cir.nii.ac.jp/crid/1360283691021131008; Integrated seismic source model of the 2015 Gorkha, Nepal, earthquake; https://cir.nii.ac.jp/crid/1360292619899560448; The 2015 Gorkha Nepal Earthquake: Insights from Earthquake Damage Survey; https://cir.nii.ac.jp/crid/1360846645576188672; Detailed rupture imaging of the 25 April 2015 Nepal earthquake using teleseismic <i>P</i> waves; https://cir.nii.ac.jp/crid/1360855571012944896; Some observations on strong-motion earthquake measurement using a digital accelerograph; https://cir.nii.ac.jp/crid/1361137045103194240; Site effect evaluation in the basin of Santiago de Chile using ambient noise measurements; https://cir.nii.ac.jp/crid/1361699995511350912; Rapid Seismological Quantification of Source Parameters of the 25 April 2015 Nepal Earthquake; https://cir.nii.ac.jp/crid/1361981468687026304; Slip model of the 2015 <i>M</i>_<i>w</i> 7.8 Gorkha (Nepal) earthquake from inversions of ALOS‐2 and GPS data; https://cir.nii.ac.jp/crid/1361981470505143936; Strong-Motion Observations of the M 7.8 Gorkha, Nepal, Earthquake Sequence and Development of the N-SHAKE Strong-Motion Network; https://cir.nii.ac.jp/crid/1361981470736008064; A study of local amplification effect of soil layers on ground motion in the Kathmandu Valley using microtremor analysis; https://cir.nii.ac.jp/crid/1361981471325936896; Effect of Baseline Corrections on Displacements and Response Spectra for Several Recordings of the 1999 Chi-Chi, Taiwan, Earthquake; https://cir.nii.ac.jp/crid/1361981471434886144; Estimation of Strong Motion During the 2011 Northern Nagano Earthquake and an Associated Building Damage Survey; https://cir.nii.ac.jp/crid/1362544418378174464; False Site Effects: The Anjar Case, following the 2001 Bhuj (India) Earthquake; https://cir.nii.ac.jp/crid/1363107368658400896; Slip pulse and resonance of the Kathmandu basin during the 2015 Gorkha earthquake, Nepal; https://cir.nii.ac.jp/crid/1363388843571645056; Changes in the depositional system of the Paleo-Kathmandu Lake caused by uplift of the Nepal Lesser Himalayas; https://cir.nii.ac.jp/crid/1363388845799128448; Heavier Damages without Site Effects and Site Effects with Lighter Damages: Boumerdes City (Algeria) after the May 2003 Earthquake; https://cir.nii.ac.jp/crid/1363388845889695744; Overview of the Large 25 April 2015 Gorkha, Nepal, Earthquake from Accelerometric Perspectives; https://cir.nii.ac.jp/crid/1364233269271216256
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• Bibliographic ID (NDL): 10193194; http://id.ndl.go.jp/bib/10193194
• NAID: 120005973254