Field Investigation of the November to December 2015 Earthquake Swarm in West Halmahera, Indonesia

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• 作者：Endra Gunawan ; Firza Ghozalba ; Syauqi…
• 关键词：2015 West Halmahera Swarm ; Earthquakes ; Jailolo volcano
• 刊名：Geotechnical and Geological Engineering
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：35
• 期：1
• 页码：425-432
• 全文大小：
• 刊物类别：Earth and Environmental Science
• 刊物主题：Geotechnical Engineering & Applied Earth Sciences; Hydrogeology; Terrestrial Pollution; Waste Management/Waste Technology; Civil Engineering;
• 出版者：Springer International Publishing
• ISSN：1573-1529
• 卷排序：35

文摘

The West Halmahera Swarm (WHS) event occurred from November to December 2015. A seismic station located in Ternate City detected at least 1000 shocks of magnitude (M) ≥ 1 and 11 shocks of M ≥ 4.5. Our estimation yields a cumulative seismic moment of 3.87 × 1021 N m, which is equivalent to a single M 8.3 earthquake. We conducted a field survey after the swarm event and found that roads and residents’ houses experienced cracks, while some parts of buildings were destroyed during the event. We find that the 2015 WHS was located just below the Jailolo volcano and was strongly associated with volcanic activity.