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Hydromechanics of Reservoir Induced ...

University of South Carolina., Geology.

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Hydromechanics of Reservoir Induced Seismicity.

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
正題名/作者:	Hydromechanics of Reservoir Induced Seismicity./
作者:	Dura-Gomez, Inmaculada.
面頁冊數:	159 p.
附註:	Adviser: Pradeep Talwani.
Contained By:	Dissertation Abstracts International70-04B.
標題:	Geology. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3352746
ISBN:	9781109108422

Hydromechanics of Reservoir Induced Seismicity.
Dura-Gomez, Inmaculada.

Hydromechanics of Reservoir Induced Seismicity. - 159 p.

Adviser: Pradeep Talwani.

Thesis (Ph.D.)--University of South Carolina, 2009.

Data from five reservoirs were analyzed to investigate the various factors and possible pore pressure thresholds associated with Reservoir Induced Seismicity (RIS). Data was obtained from the following reservoirs: Koyna and Warna Reservoirs in India, Itoiz Reservoir in the western Pyrenees, Spain, and Jocassee and Monticello Reservoirs in South Carolina, U.S.A.

ISBN: 9781109108422Subjects--Topical Terms:

516570
Geology.

Hydromechanics of Reservoir Induced Seismicity.
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500 $a Source: Dissertation Abstracts International, Volume: 70-04, Section: B, page: 2146.
502 $a Thesis (Ph.D.)--University of South Carolina, 2009.
520 $a Data from five reservoirs were analyzed to investigate the various factors and possible pore pressure thresholds associated with Reservoir Induced Seismicity (RIS). Data was obtained from the following reservoirs: Koyna and Warna Reservoirs in India, Itoiz Reservoir in the western Pyrenees, Spain, and Jocassee and Monticello Reservoirs in South Carolina, U.S.A.
520 $a Koyna Reservoir is one out of four reservoirs in the world where M≥6.0 induced earthquakes have occurred, whereas Warna Reservoir accounts for one out of ten cases with 5.0≤M≤5.9 induced earthquakes. Induced seismicity in the Koyna-Warna region is associated with annual filling cycles in the two reservoirs, large water level changes (30 to 45 m) and the presence of regional scale fractures. The Koyna-Warna case includes 19 M≥5.0 earthquakes at non-repeating hypocenters. The calculation of excess pore pressures associated with these earthquakes suggests values >300 kPa or >600 kPa, before or after 1993 respectively. The need for larger pore pressures from 1993 suggests that M≥5 earthquakes were induced on stronger faults in the region. The exceedance of the previous water level maxima (stress memory) is the most important, although not determining factor in inducing these M≥5.0 earthquakes.
520 $a Itoiz Reservoir is one of twenty nine reservoirs with 4.0≤M≤4.9 induced earthquakes. The analysis of the RIS associated with the Itoiz Reservoir impoundment, between January 2004 and the end of 2008, shows that that pore pressures diffuse away from Itoiz Reservoir through the carbonate megabreccia systems of the Early to Middle Eocene Hecho Group, and a series of near-vertical thrust faults above the gently dipping Gavarnie thrust. Excess diffused pore pressures destabilize saturated critically stressed seismogenic fractures where RIS takes place. In particular, M≥3.0 earthquakes in the region are associated with excess pore pressures of the order of 100 to 200 kPa.
520 $a Jocassee and Monticello Reservoirs in South Carolina are among the best studied reservoir induced seismicity cases in the world, and have been associated with M<4 and M<3 earthquakes respectively. The analysis of some of these earthquakes emphasizes the contribution of the diffused pore pressures to the observed seismicity. In the case of Jocassee Reservoir, 2.0≤M≤3.0 earthquakes occurred in a homogenous, non-fractured crystalline rock and are associated with excess diffused pore pressures of the order of 600 to 700 kPa. Earthquakes associated with the impoundment of Monticello Reservoir occurred in a region of very complex geology, with many pre-existing local scale fractures. The calculation of the excess diffused pore pressures associated with 2.0≤M≤3.0 earthquakes yielded values of the order of 100 to 300 kPa.
520 $a Synthesis of these data show that RIS occurs when excess pore pressures (which occur primarily by diffusion) reach threshold values needed to induce RIS. The occurrence of RIS and its magnitude are controlled by the filling history, availability of fluid filled saturated fractures and their hydrogeological properties.
590 $a School code: 0202.
650 4 $a Geology. $3 516570
650 4 $a Geophysics. $3 535228
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710 2 $a University of South Carolina. $b Geology. $3 1022431
773 0 $t Dissertation Abstracts International $g 70-04B.
790 $a 0202
790 1 0 $a Owens, Thomas J. $e committee member
790 1 0 $a Rajaram, Harihar $e committee member
790 1 0 $a Talwani, Pradeep, $e advisor
790 1 0 $a Torres, Raymond $e committee member
791 $a Ph.D.
792 $a 2009
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3352746