東華大學圖書館 |

Language: English

Help

回圖書館首頁

手機版館藏查詢

Back

Switch To: Labeled | MARC Mode | ISBD

Mountain Building, Fault Structure, ...

Hubbard, Judith Ariadne.

Linked to FindBook

Google Book

Amazon

博客來

Mountain Building, Fault Structure, and Seismic Hazard in the Tibetan Plateau and Southern California.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Mountain Building, Fault Structure, and Seismic Hazard in the Tibetan Plateau and Southern California./
Author:	Hubbard, Judith Ariadne.
Description:	126 p.
Notes:	Source: Dissertation Abstracts International, Volume: 73-04, Section: B, page: 2056.
Contained By:	Dissertation Abstracts International73-04B.
Subject:	Geology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3491907
ISBN:	9781267109088

Mountain Building, Fault Structure, and Seismic Hazard in the Tibetan Plateau and Southern California.
Hubbard, Judith Ariadne.

Mountain Building, Fault Structure, and Seismic Hazard in the Tibetan Plateau and Southern California. - 126 p.

Source: Dissertation Abstracts International, Volume: 73-04, Section: B, page: 2056.

Thesis (Ph.D.)--Harvard University, 2011.

This dissertation investigates the processes of active mountain building and their implications for regional earthquake hazards in the Longmenshan fold-and-thrust belt, China, and the Western Transverse Ranges of California. Chapters two and three examine the styles of active faulting in the Longmenshan and the mechanism of uplift of the adjacent Tibetan Plateau. We construct cross-sections extending through the Sichuan basin and into the Longmenshan and show that shortening and structural relief correlate with topography. We conclude that the mountain belt is tectonically active and that crustal shortening is sufficient to produce and maintain the Longmenshan topography without calling on alternatively proposed uplift mechanisms such as lower crustal inflation. During the course of this research, the 2008 M w7.9 Wenchuan earthquake occurred, further documenting the active nature of this fold-and-thrust belt. We construct a 3D fault model illustrating the earthquakes complex source geometry, which involved slip on two imbricate faults and breached a significant lateral segment boundary. To assess the activity and shortening rates elsewhere in the region, we modeled the thrust belt as a critical taper wedge and examine the implications of these findings for seismic hazard assessment. Appendix A1 provides a basic velocity model for the Sichuan basin and Longmen Shan, in the form of several 1D velocity-depth curves.

ISBN: 9781267109088Subjects--Topical Terms:

516570
Geology.

Mountain Building, Fault Structure, and Seismic Hazard in the Tibetan Plateau and Southern California.
LDR:03322nmm a2200301 4500 001 2061143
005 20150929074109.5
008 170521s2011 ||||||||||||||||| ||eng d
020 $a 9781267109088
035 $a (MiAaPQ)AAI3491907
035 $a AAI3491907
040 $a MiAaPQ $c MiAaPQ
100 1 $a Hubbard, Judith Ariadne. $3 3175373
245 1 0 $a Mountain Building, Fault Structure, and Seismic Hazard in the Tibetan Plateau and Southern California.
300 $a 126 p.
500 $a Source: Dissertation Abstracts International, Volume: 73-04, Section: B, page: 2056.
500 $a Adviser: John H. Shaw.
502 $a Thesis (Ph.D.)--Harvard University, 2011.
520 $a This dissertation investigates the processes of active mountain building and their implications for regional earthquake hazards in the Longmenshan fold-and-thrust belt, China, and the Western Transverse Ranges of California. Chapters two and three examine the styles of active faulting in the Longmenshan and the mechanism of uplift of the adjacent Tibetan Plateau. We construct cross-sections extending through the Sichuan basin and into the Longmenshan and show that shortening and structural relief correlate with topography. We conclude that the mountain belt is tectonically active and that crustal shortening is sufficient to produce and maintain the Longmenshan topography without calling on alternatively proposed uplift mechanisms such as lower crustal inflation. During the course of this research, the 2008 M w7.9 Wenchuan earthquake occurred, further documenting the active nature of this fold-and-thrust belt. We construct a 3D fault model illustrating the earthquakes complex source geometry, which involved slip on two imbricate faults and breached a significant lateral segment boundary. To assess the activity and shortening rates elsewhere in the region, we modeled the thrust belt as a critical taper wedge and examine the implications of these findings for seismic hazard assessment. Appendix A1 provides a basic velocity model for the Sichuan basin and Longmen Shan, in the form of several 1D velocity-depth curves.
520 $a Chapter four examines the potential for similar multi-segment thrust fault earthquakes in the Western Transverse Ranges, California. Our study focuses on the Ventura Avenue anticline, a rapidly uplifting (> 5mm/yr) structure where there is disagreement about the nature of the underlying Ventura fault and its seismic hazards. We provide new data and construct a 3D model of the system showing that the Ventura fault extends to seismogenic depth beneath the anticline, and interpret the anticline as a fault-propagation fold. High-resolution seismic data suggest that the fault deforms late Pleistocene and younger strata, implying that the fault system is active. We show that the Ventura faults links a series of onshore and offshore faults at depth and along strike, that if ruptured together could generate Mw7.3-7.6 earthquakes. Such multi-segment earthquakes pose a considerable seismic hazard to surrounding communities in southern California.
590 $a School code: 0084.
650 4 $a Geology. $3 516570
650 4 $a Geophysics. $3 535228
650 4 $a Continental dynamics. $3 3175374
690 $a 0372
690 $a 0373
690 $a 0406
710 2 $a Harvard University. $3 528741
773 0 $t Dissertation Abstracts International $g 73-04B.
790 $a 0084
791 $a Ph.D.
792 $a 2011
793 $a English
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3491907