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

Aseismic fault slip behavior, earthq...

Du, Wen-xuan.

FindBook

Google Book

Amazon

博客來

Aseismic fault slip behavior, earthquake source parameter determination and seismicity changes.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Aseismic fault slip behavior, earthquake source parameter determination and seismicity changes./
作者:	Du, Wen-xuan.
面頁冊數:	150 p.
附註:	Adviser: Lynn R. Sykes.
Contained By:	Dissertation Abstracts International63-10B.
標題:	Geophysics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3066831
ISBN:	0493862439

Aseismic fault slip behavior, earthquake source parameter determination and seismicity changes.
Du, Wen-xuan.

Aseismic fault slip behavior, earthquake source parameter determination and seismicity changes. - 150 p.

Adviser: Lynn R. Sykes.

Thesis (Ph.D.)--Columbia University, 2002.

In Chapter 1, two possible triggering mechanisms are examined for the phenomenon of “triggered aseismic fault slip”. We evaluate the possible triggering role of static stress changes by examining observations made after 10 large earthquakes in California. Three discrepancies or failures with this model exist, which implies that static stress triggering either is not or is not the sole mechanism causing the observed triggered slip. We then use a spring-slider system as a very simplified fault model to study its slip behavior and the impact of transient (dynamic) loading on it. We show that a two-state-variable rate- and state-dependent frictional law can generate creep events. Certain types of transient loads can cause a large time advance of (or trigger) the next creep event.

ISBN: 0493862439Subjects--Topical Terms:

535228
Geophysics.

Aseismic fault slip behavior, earthquake source parameter determination and seismicity changes.
LDR:03246nam 2200289 a 45 001 926910
005 20110422
008 110422s2002 eng d
020 $a 0493862439
035 $a (UnM)AAI3066831
035 $a AAI3066831
040 $a UnM $c UnM
100 1 $a Du, Wen-xuan. $3 1250493
245 1 0 $a Aseismic fault slip behavior, earthquake source parameter determination and seismicity changes.
300 $a 150 p.
500 $a Adviser: Lynn R. Sykes.
500 $a Source: Dissertation Abstracts International, Volume: 63-10, Section: B, page: 4559.
502 $a Thesis (Ph.D.)--Columbia University, 2002.
520 $a In Chapter 1, two possible triggering mechanisms are examined for the phenomenon of “triggered aseismic fault slip”. We evaluate the possible triggering role of static stress changes by examining observations made after 10 large earthquakes in California. Three discrepancies or failures with this model exist, which implies that static stress triggering either is not or is not the sole mechanism causing the observed triggered slip. We then use a spring-slider system as a very simplified fault model to study its slip behavior and the impact of transient (dynamic) loading on it. We show that a two-state-variable rate- and state-dependent frictional law can generate creep events. Certain types of transient loads can cause a large time advance of (or trigger) the next creep event.
520 $a In Chapter 2, we examine 16 moderate-size earthquakes (3.8 ≤ <italic> m<sub>b</sub></italic>(<italic>Lg</italic>) ≤ 5.2) that occurred since 1990 in eastern North America (ENA). Important source parameters, such as focal mechanism, focal depth and seismic moment, are determined using a regional waveform inversion technique in which the best fitting double-couple mechanism is obtained through a grid search over strike, dip and rake angles. Our results are compatible with 10 previously well-determined focal mechanisms in the region. We further examine the distribution of P/T axes, the geographic variation in focal depths and apparent discrepancies between Mw and <italic>m<sub>b </sub></italic>(<italic>Lg</italic>) magnitudes.
520 $a In Chapter 3, changes in the frequency of moderate-size events (M ≥ 4.0) before and after the June 28, 1992 Landers earthquake are investigated, and their implications are discussed in the context of Coulomb Failure Stress (CFS) evolution since 1812 in Southern California. For the larger circular regions with radii of 140 to 160 km, the rate and slope of the frequency-magnitude distribution for moderate-size events just before the main shock appear to be anomalous compared to those for either the preceding or subsequent periods. The most pronounced changes, however, do not appear to be related to stress buildup to the Landers sequence itself. We also derive an “Index Value” to better quantify differences in the frequency of occurrence of moderate-size events as a function of time.
590 $a School code: 0054.
650 4 $a Geophysics. $3 535228
690 $a 0373
710 2 0 $a Columbia University. $3 571054
773 0 $t Dissertation Abstracts International $g 63-10B.
790 $a 0054
790 1 0 $a Sykes, Lynn R., $e advisor
791 $a Ph.D.
792 $a 2002
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3066831