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Earthquake Geology, Hazard, Urban Fo...

Arizona State University.

Earthquake Geology, Hazard, Urban Form and Social Vulnerability along the San Andreas Fault.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Earthquake Geology, Hazard, Urban Form and Social Vulnerability along the San Andreas Fault.
作者:	Toke, Nathan A.
面頁冊數:	203 p.
附註:	Source: Dissertation Abstracts International, Volume: 72-10, Section: B, page: .
附註:	Adviser: J. R. Arrowsmith.
Contained By:	Dissertation Abstracts International72-10B.
標題:	Geology.
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3465926
ISBN:	9781124786247

Earthquake Geology, Hazard, Urban Form and Social Vulnerability along the San Andreas Fault.
Toke, Nathan A.

Earthquake Geology, Hazard, Urban Form and Social Vulnerability along the San Andreas Fault. - 203 p.

Source: Dissertation Abstracts International, Volume: 72-10, Section: B, page: .

Thesis (Ph.D.)--Arizona State University, 2011.

The San Andreas Fault (SAF) is the primary structure within a system of faults accommodating motion between the North American and Pacific plates. Physical models of faulting and characterizations of seismic hazard are informed by investigations of paleoseismology, slip distribution, and slip rate. The impact of earthquakes on people is due in large part to social vulnerability. This dissertation contributes an analysis about the relationships between earthquake hazard and social vulnerability in Los Angeles, CA and investigations of paleoseismology and fault scarp array complexity on the central SAF.

ISBN: 9781124786247Subjects--Topical Terms:

196077
Geology.

Earthquake Geology, Hazard, Urban Form and Social Vulnerability along the San Andreas Fault.
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245 1 0 $a Earthquake Geology, Hazard, Urban Form and Social Vulnerability along the San Andreas Fault.
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500 $a Adviser: J. R. Arrowsmith.
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520 $a The San Andreas Fault (SAF) is the primary structure within a system of faults accommodating motion between the North American and Pacific plates. Physical models of faulting and characterizations of seismic hazard are informed by investigations of paleoseismology, slip distribution, and slip rate. The impact of earthquakes on people is due in large part to social vulnerability. This dissertation contributes an analysis about the relationships between earthquake hazard and social vulnerability in Los Angeles, CA and investigations of paleoseismology and fault scarp array complexity on the central SAF.
520 $a Analysis of fault scarp array geometry and morphology using 0.5 m digital elevation models along 122 km of the central SAF reveals significant variation in the complexity of SAF structure. Scarp trace complexity is measured by scarp separation, changes in strike, fault trace gaps, and scarp length per SAF kilometer. Geometrical complexity in fault scarp arrays indicates that the central SAF can be grouped into seven segments. Segment boundaries are controlled by interactions with subsidiary faults. Investigation of an offset channel at Parkfield, CA yields a late Holocene slip rate of 26.2 +6.4/- 4.3 mm/yr. This rate is lower than geologic measurements on the Carrizo section of the SAF and rates implied by far-field geodesy. However, it is consistent with historical observations of slip at Parkfield. Paleoseismology at Parkfield indicates that large earthquakes are absent from the stratigraphic record for at least a millennia. Together these observations imply that the amount of plate boundary slip accommodated by the main SAF varies along strike.
520 $a Contrary to most environmental justice analyses showing that vulnerable populations are spatially-tied to environmental hazards, geospatial analyses relating social vulnerability and earthquake hazard in southern California show that these groups are not disproportionately exposed to the areas of greatest hazard. Instead, park and green space is linked to earthquake hazard through fault zone regulation. In Los Angeles, a parks poor city, the distribution of social vulnerability is strongly tied to a lack of park space. Thus, people with access to financial and political resources strive to live in neighborhoods with parks, even in the face of forewarned risk.
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