[1]YANG Jingqiong,YANG Zhousheng,XU Yaji,et al.Comparison of Determination of Magnitudes between Yunnan Seismic Network and National Seismic Network and American Seismic Network[J].Journal of Seismological Research,2020,43(01):57-63.
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Comparison of Determination of Magnitudes between Yunnan Seismic Network and National Seismic Network and American Seismic Network
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
43
Number of periods:
2020 01
Page number:
57-63
Column:
Public date:
2020-01-30
- Title:
- Comparison of Determination of Magnitudes between Yunnan Seismic Network and National Seismic Network and American Seismic Network
- Keywords:
- surface wave magnitude; moment magnitude; Yunnan Seismic Network; China Seismic Network; American Seismic Network
- CLC:
- P315.6
- DOI:
- -
- Abstract:
- Using the data which recorded by the Yunnan Seismic Network after fully complete the digitization(2008-2017),in accordance with the determination method specified by the new magnitude national standard 《Earthquake magnitude provisions》(GB17740—2017),for the earthquakes of magnitude greater than ML4.0,we manual remeasured the wide band surface wave magnitude MS(BB) and the moment magnitude Mw,and compared with the MS7 of the National Network cataloguing results and the MW(NEIC) measured by the United States Seismic Network(NEIC),the results show that:the measurement method of MS(BB) and MS7 are the same,the gauge functions are equal,the consistency of the two is the best.The surface wave magnitude and moment magnitude have the system difference,and MS7,MS(BB) and MW are almost equal when the magnitude is around MW3.5.For the moment magnitude less than 3.5,MS7 and MS(BB) are less than MW,while for the moment magnitude more than 3.5,MS7 and MS(BB) are greater than MW.Compared with the United States Seismic Network,when MS(BB) is about 5.5 and 6.0,MS(BB) and MW(NEIC) have the best consistency,and the two are almost equal.When MS(BB) is less than 5.5,MS(BB) is smaller than MW(NEIC),while MS(BB) is greater than MW(NEIC) when it is greater than 6.0.There is a system deviation between MW and MW(NEIC),MW is less than MW(NEIC) overall,and with the increase of the magnitude,the deviation value is on the rise.
- References:
- -
- Similar References:
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Last Update:
2020-01-30