Earthquakes, Siskiyou County Amateur Radio, N6MRX

RECENT EARTHQUAKES

MAG DATE LOCAL-TIME LAT LON DEPTH LOCATION y/m/d h:m:s deg deg km 2.9 2004/07/23 13:06:27 42.089N 120.254W 7.5 124 km (77 mi) ENE of Medicine Lakes Volc area 2.7 2004/07/23 01:43:57 42.080N 120.248W 5.5 124 km (77 mi) ENE of Medicine Lakes Volc area 2.6 2004/07/22 21:46:14 42.120N 120.256W 4.4 125 km (78 mi) ENE of Medicine Lakes Volc area 1.8 2004/07/22 17:29:55 42.132N 120.256W 24.5 126 km (78 mi) ENE of Medicine Lakes Volc area 2.5 2004/07/22 17:25:49 42.119N 120.258W 17.6 125 km (78 mi) ENE of Medicine Lakes Volc area 2.0 2004/07/22 17:01:39 42.106N 120.260W 1.8 124 km (77 mi) ENE of Medicine Lakes Volc area 2.2 2004/07/22 14:18:13 42.096N 120.258W 3.3 124 km (77 mi) ENE of Medicine Lakes Volc area 2.0 2004/07/22 14:16:46 42.098N 120.232W 10.2 126 km (78 mi) ENE of Medicine Lakes Volc area 2.1 2004/07/22 14:03:27 42.160N 120.264W 19.4 125 km (78 mi) E of Klamath Falls, OR 1.6 2004/07/22 13:58:47 42.104N 120.625W 8.6 96 km (60 mi) E of Klamath Falls, OR 1.6 2004/07/22 13:47:27 42.068N 120.341W 0.0 116 km (72 mi) ENE of Medicine Lakes Volc area 2.2 2004/07/22 13:42:49 42.102N 120.239W 1.2 126 km (78 mi) ENE of Medicine Lakes Volc area 2.4 2004/07/22 13:40:25 42.121N 120.253W 9.8 126 km (78 mi) ENE of Medicine Lakes Volc area 2.2 2004/07/22 13:34:34 42.120N 120.262W 1.7 125 km (78 mi) ENE of Medicine Lakes Volc area 4.3 2004/07/22 13:26:27 42.214N 120.296W 5.0 122 km (76 mi) E of Klamath Falls, OR 2.0 2004/07/22 13:15:47 42.094N 120.246W 0.0 125 km (78 mi) ENE of Medicine Lakes Volc area 2.2 2004/07/22 07:21:51 42.081N 120.223W 1.3 126 km (78 mi) ENE of Medicine Lakes Volc area 2.2 2004/07/22 06:47:38 42.087N 120.233W 5.2 125 km (78 mi) ENE of Medicine Lakes Volc area 3.1 2004/07/22 06:40:10 42.174N 120.263W 5.0 125 km (78 mi) E of Klamath Falls, OR 2.1 2004/07/21 23:55:13 42.075N 120.244W 2.4 124 km (77 mi) ENE of Medicine Lakes Volc area 2.1 2004/07/21 18:01:07 42.093N 120.246W 2.1 125 km (78 mi) ENE of Medicine Lakes Volc area 2.8 2004/07/20 21:31:21 42.076N 120.245W 4.3 124 km (77 mi) ENE of Medicine Lakes Volc area 1.9 2004/07/20 13:09:36 42.082N 120.242W 0.3 125 km (77 mi) ENE of Medicine Lakes Volc area 2.4 2004/07/20 04:36:35 42.082N 120.252W 1.7 124 km (77 mi) ENE of Medicine Lakes Volc area 1.2 2004/07/20 03:53:17 42.099N 120.228W 0.0 126 km (79 mi) ENE of Medicine Lakes Volc area 2.6 2004/07/19 11:39:45 42.070N 120.251W 0.0 123 km (77 mi) ENE of Medicine Lakes Volc area 2.0 2004/07/19 07:47:19 42.072N 120.239W 0.0 124 km (77 mi) ENE of Medicine Lakes Volc area 1.9 2004/07/18 10:20:44 42.063N 120.239W 0.0 124 km (77 mi) ENE of Medicine Lakes Volc area 2.0 2004/07/15 12:58:43 42.089N 120.240W 11.6 125 km (78 mi) ENE of Medicine Lakes Volc area 2.2 2004/07/13 16:43:29 42.062N 120.235W 10.8 124 km (77 mi) ENE of Medicine Lakes Volc area 3.1 2004/07/13 07:54:33 42.156N 120.276W 5.0 124 km (77 mi) E of Klamath Falls, OR

more information

Global Earthquake Satellite System -- home page

Final GESS report -- results of the GESS study, with a 20 year plan for deploying a satellite network for monitoring signs of impending earthquakes. "There's a lot of excitement in the scientific community for getting really high-quality, high time-resolution measurements of surface deformation," says JPL's Carol Raymond, who led the study.

NASA's earthquake research -- links to various NASA research projects related to earthquakes

USGS Earthquake Hazards Program -- (USGS) home page

2003 Earthquake Probability Study -- for San Francisco Bay Area, by the USGS

ULF/ELF observations predict earthquakes -- (SPIE) An interview with Jack Dea, Naval Command, Control and Ocean Surveillance Center

QuakeSat -- (Stanford University) home page

QuakeFinder -- a company dedicated to detecting earthquake precursors from space. QuakeFinder has just launched QuakeSat.

A Cubesat-derived design for a unique academic research mission in earthquake signature detection -- (pdf format) more about Quakesat

Can We Predict Earthquakes?

Scientists so far have not been able to predict earthquakes. The suddenness with which they appear makes them as difficult to predict as tornadoes. They come in waves that move at speeds of 3.3 miles per second in surface rock, and 4.8 miles per second in the next layer of rock. An instrument called a seismograph measures the severity of the quake. But there is no instrument to date that can predict an earthquake.

American and Russian scientists are working on a theory which could possibly predict an earthquake, but only in regions where small earth tremors precede large earthquakes. Unfortunately, large earthquakes occur without any advance warnings, and that is where the predicting difficulties lie. California has many different earthquake detection devices, but Professor Clarence Allen of the California Institute of Technology thinks that we'll never learn to predict earthquakes unless we can trap a few. To do this he says we'll have to blanket California with many more than the 500 instruments now in use. China, a country that suffers frequently from the most devastating earthquakes, has enlisted all its farmers and citizens as part-time observers to help make predictions. They have a theory that animals behave restlessly and nervously prior to an earthquake. They also watch deep water wells for a murky discoloration, believing it to be a sign of an impending earthquake. Thus far they have made some successful predictions and also many false alarms.