Seismicity major r i s cases worldwide region name of

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Unformatted text preview: e ⅓- ½ of earthquakes overall, but only small % of large earthquakes Difficult to dis:nguish from background ac:vity Study of microearthquakes iden:fies previously unknown faults Radon / Radioac/vity of Wells §༊  §༊  §༊  §༊  Rare gas forms as part of uranium’s decay chain Forms no chemical compounds Remains trapped in rock un:l escapes along fracture Forma:on of new fractures before large earthquake may allow Rn to escape closer to ground surface (and may cause drop in water table) Local Changes in •  Electrical Conductivity •  Gravity •  Magnetic Field Earthquake Weather Fracking Reservoir-Induced Seismicity Major R I S Cases Worldwide Region Name of Dam Country Height (m) Year of Impounding Year of Largest Quake Magnitude Asia/ Pacific Koyna Xinfengjiang Killar i Sr inagar ind Charvak Nurek Karun III India China India Thailand Uzbekistan Tajikistan Iran 103 105 75 140 148 317 205 1962 1959 1991 1977 1971 1963 2005 1967 1962 1993 1983 1977 1972 2006 6.3 6.1 6.1 5.9 5.3 4.6 4.3 Afr ica Kar iba Aswan Akosombo Zambia/Zimbabwe 128 Egypt 111 Ghana 134 1958 1964 1964 1963 1981 1964 6.2 5.6 4.7 USA USA Canada 236 221 108 1967 1935 1975 1975 1939 1975 5.7 5.0 4.1 North Amer ica Oroville Hoover Manicouagan 3 South Amer ica Porto Colombia/Volta Grande Brazil Capivara Car mo do Cajura Europe Brazil Brazil 40/56 59 22 1973-74 1976 1954 1974 1976 1972 4.2 3.7 3.7 Kremasta Monteynard Canelles Greece France Spain 160 155 150 1965 1962 1960 1966 1963 1962 6.2 4.9 4.7 Sichuan, China (?) May 12, 2008 - M7.9 sequent earthquake, new dams are continuously being built in of earthquakes. Pr ior to any dam construction, developers seismica6y active apeople west and (+18,392 missing) nd gover nments must conduct open and transparent analyses ll 9,195 reas to the killed northwest of the a >21 million buildin...
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This note was uploaded on 01/16/2014 for the course CSE 132 taught by Professor Lang during the Winter '08 term at UC Irvine.

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