Improvement of earthquake locations with the Marine Cable Hosted Observatory (MACHO) offshore NE Taiwan

NCUIR > College of Earth Sciences > Department of Earth Sciences > journal & Dissertation > Item 987654321/103724

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/103724

Title:	Improvement of earthquake locations with the Marine Cable Hosted Observatory (MACHO) offshore NE Taiwan
Authors:	許樹坤;Hsiao, Nai-Chi;Lin, Tzu-Wei;Hsu, Shu-Kun;Kuo, Kai-Wei;Shin, Tzay-Chyn;Leu, Peih-Lin
Contributors:	地球科學學院地球科學學系
Keywords:	Earth and Environmental Science;Earth Sciences;Earthquakes;Geophysics/Geodesy;Marine;Observatories;Ocean floor;Oceanography;Offshore;Offshore Engineering;Pressure gauges;Seismic activity;Special Issue Paper
Date:	2014-01-01
Issue Date:	2026-04-23 11:36:14 (UTC+8)
Publisher:	Springer Netherlands;Dordrecht: Springer Netherlands
Abstract:	摘要： In order to improve the locating capability for offshore earthquakes and tsunamis monitored off northeastern Taiwan, a cable-based ocean bottom seismographic observatory named “Marine Cable Hosted Observatory” (MACHO) was constructed and began operation at the end of 2011. The installed instruments of the observatory include a broadband seismometer, a strong-motion seismometer and a pressure gauge. In addition, various scientific instruments could be deployed for other purposes as well. At present, the seismic data are transmitted in real-time via a fiber cable, and integrated into the current inland seismographic network in Taiwan. The ocean bottom station has contributed to provide high quality seismic data already. According to observations from January 2012 to June 2013, there were a total of 15,168 earthquakes recorded by the system. By using the data from the ocean bottom station, the number of relocated earthquakes with an azimuth gap less than 180 degrees substantially increase about 34 %. Meanwhile, the root–mean–square of the time residual, the error in epicenter, and the error in depth of the earthquake locations decrease. Therefore, the implementation of MACHO has the advantage of extending the coverage of existing the Taiwan seismic network to the offshore, providing more accurate and real-time seismic data for offshore earthquakes monitoring. The results show that MACHO is crucial and necessary for monitoring seismic activities in northeastern Taiwan. 其他題名： Mar Geophys Res 出版者： Dordrecht: Springer Netherlands 出版日期： 2014-09-01 出處： Marine geophysical researches, 2014-09, Vol.35 (3), p.327-336 資源來源： SpringerLink - Journals 版權： Springer Science+Business Media Dordrecht 2013 版權： Springer Science+Business Media Dordrecht 2014 識別號： ISSN: 0025-3235 識別號： EISSN: 1573-0581 識別號： DOI: 10.1007/s11001-013-9207-3
Appears in Collections:	[Department of Earth Sciences ] journal & Dissertation

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