東華大學圖書館 |

語系: 繁體中文

說明(常見問題)

回圖書館首頁

手機版館藏查詢

登入

回首頁

切換: 標籤 | MARC模式 | ISBD

Aspects of earthquake triggering and...

Chen, Xiaowei.

FindBook

Google Book

Amazon

博客來

Aspects of earthquake triggering and seismicity clustering.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Aspects of earthquake triggering and seismicity clustering./
作者:	Chen, Xiaowei.
面頁冊數:	187 p.
附註:	Source: Dissertation Abstracts International, Volume: 74-08(E), Section: B.
Contained By:	Dissertation Abstracts International74-08B(E).
標題:	Geophysics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3558085
ISBN:	9781303023446

Aspects of earthquake triggering and seismicity clustering.
Chen, Xiaowei.

Aspects of earthquake triggering and seismicity clustering. - 187 p.

Source: Dissertation Abstracts International, Volume: 74-08(E), Section: B.

Thesis (Ph.D.)--University of California, San Diego, 2013.

Earthquakes strongly cluster in space and time, driven both by earthquake-to-earthquake triggering and underlying physical processes, such as tectonic stress loading, increased pore pressure, etc. I explore both global and regional datasets to understand characteristics of these processes in different tectonic environments.

ISBN: 9781303023446Subjects--Topical Terms:

535228
Geophysics.

Aspects of earthquake triggering and seismicity clustering.
LDR:03611nam a2200289 4500 001 1965535
005 20141030134119.5
008 150210s2013 ||||||||||||||||| ||eng d
020 $a 9781303023446
035 $a (MiAaPQ)AAI3558085
035 $a AAI3558085
040 $a MiAaPQ $c MiAaPQ
100 1 $a Chen, Xiaowei. $3 2102210
245 1 0 $a Aspects of earthquake triggering and seismicity clustering.
300 $a 187 p.
500 $a Source: Dissertation Abstracts International, Volume: 74-08(E), Section: B.
500 $a Adviser: Peter M. Shearer.
502 $a Thesis (Ph.D.)--University of California, San Diego, 2013.
520 $a Earthquakes strongly cluster in space and time, driven both by earthquake-to-earthquake triggering and underlying physical processes, such as tectonic stress loading, increased pore pressure, etc. I explore both global and regional datasets to understand characteristics of these processes in different tectonic environments.
520 $a I study global seismicity using intermediate-period (35--70 s) Rayleigh waves recorded by the global seismic network. Applying a surface wave detect method identifies about 1000 previously un-cataloged earthquakes from 1997 to 2009, most of which are located in the southern ocean. I further analyze a small number of these events that are located in Antarctica to understand glacial-related triggering processes. Absolute and differential travel-times measured from waveform cross-correlation are used to obtain refined locations. A single-force model is applied to the observed amplitudes at 50~Hz to obtain best-fitting force directions. Additionally, possible glacial calving events are identified from MODIS images. The combined results suggest that events on Vanderford and Ninnis glaciers are a result of calving processes.
520 $a To understand the general characteristics of earthquake clustering from a large dataset of earthquakes, I analyze seismicity in southern California. I use a high-resolution earthquake catalog based on waveform cross-correlation to study the spatial-temporal distribution of earthquakes. Parameters based on event location, magnitude and occurrence time are computed for isolated seismicity clusters. Spatial migration behavior is modeled using a weighted-least-squares method. Aftershock-like event clusters do not exhibit significant spatial migration compared with earthquake swarms. Two triggering processes are considered for swarms: slow slip and fluid diffusion, which are distinguished based on a statistical analysis of event migration. The results suggest fluid-induced seismicity is found across southern California, particularly within geothermal areas. In the Salton Sea geothermal field (SSGF), a correlation between seismicity and fluid injection activities is seen. Spatial-temporal variations of earthquake stress drops are investigated in different regions, and a distance-dependence of stress drop from the injection source is found in the SSGF, suggesting the influence of increased pore pressure. Temporal variation of stress drops within mainshock source regions shows that foreshocks and earthquake swarms have lower stress drops than background seismicity and aftershocks. These results, combined with the spatial migration observed for some large foreshock sequences, suggests an aseismic transient process is likely involved in foreshock triggering.
590 $a School code: 0033.
650 4 $a Geophysics. $3 535228
690 $a 0373
710 2 $a University of California, San Diego. $b Earth Sciences. $3 1035583
773 0 $t Dissertation Abstracts International $g 74-08B(E).
790 $a 0033
791 $a Ph.D.
792 $a 2013
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3558085