The Holocene paleoearthquakes on the 2014 Kangding Ms6.3 earthquake faults
Hu C. ZhongPublished August 14, 2019, SCEC Contribution #9657, 2019 SCEC Annual Meeting Poster #102
On November 22, 2014, a Ms6.3 earthquake occurred in Kangding, Sichuan Province. After the field survey of fracture in this region, the Selaha segment of Xianshuihe fault zone is confirmed as the earthquake fault based on comprehensive research of focal mechanism, distribution of the aftershock and regional faults. In this paper, the author revealed the characters of Holocene paleoearthquakes of this segment through interpretation of remote sensing, field investigation, four trenches excavating, sample dating and other research techniques, concluded as: (1) There are many paleoearthquakes happened in this segment. The elapsed time from the latest one is up to 2027–2359 a BP, so it should be no surprise that the earthquake or even more stronger earthquake occurred in this segment. (2) The paleoearthquakes in the Holocene showed obvious periodicity in Selaha segment. It shows obviously clustering characteristics between 6812–11316 a BP, recurrence intervals may around 1000 years. Since 6812 a BP, there has been only two earthquakes which were between 3840–4295 a BP and 2027–2359 a BP, and the time of recurrence interval was significantly longer.
Key Words
Kangding Ms6.3 earthquake, seismogenic fault, Xianshuihe fault zone, the Selaha segment, paleoearthquake, the elapsed time,
Citation
Zhong, H. C. (2019, 08). The Holocene paleoearthquakes on the 2014 Kangding Ms6.3 earthquake faults. Poster Presentation at 2019 SCEC Annual Meeting.
Related Projects & Working Groups
Earthquake Geology
