>------------- Begin Forwarded Message ------------- > >Date: Thu, 6 Apr 2000 18:01:09 -0400 >From: tharlow@........ >To: outreach@...................... >Subject: USGS: Geomagnetic Storm Alert > > >Media Advisory Address >U.S. Department of the Interior PO Box 25046, MS 150 >U.S. Geological Survey Denver, CO 80225 > > >Release Contact Phone E-mail >April 6, 2000 Don Herzog 303-273-8487 >herzog@........ >Geomagnetic Storm Alert > >The U.S. Geological Survey (USGS) reports a sudden increase in geomagnetic >activity that may signal the onset of a geomagnetic storm. While it is >geomagnetic storms that give rise to the beautiful Northern lights, they >can also pose a serious threat for commercial and military satellite >operators, power companies, astronauts, and they can even shorten the life >of oil pipelines in Alaska by increasing pipeline corrosion. > >A significant increase in geomagnetic activity was observed at about 12:45 >p.m. (E.T) on Thursday, April 6, 2000. Space Weather sources at NOAA & >NASA indicate that the likely cause of this increased activity is due to an >interplanetary shock wave that was detected by the ACE satellite at about >12:30 p.m. (E.T) today. Magnetic activity increased at all USGS magnetic >observatories about 15 minutes later and could be significant over the next >24-48 hours. If this geomagnetic activity continues, there is the >possibility for visible aurora at mid-latitudes. Plots of the data from >these observatories can be seen on-line at: >http://geomag.usgs.gov/frames/plots.htm > >Geomagnetic storms occur when plasma, a hot ionized gas of charged >particles produced by eruptions on the Sun, impacts the Earth's magnetic >field causing it to fluctuate wildly. These fluctuations cause currents to >flow in conductors on the ground and in space. Solar eruptions can produce >billions of tons of plasma traveling at speeds in excess of a million miles >an hour. > >The USGS provides valuable geomagnetic data to a wide variety of users and >organizations that are affected by geomagnetic storms. The agency operates >a network of 14 magnetic observatories that continuously monitor the >Earth's magnetic field. The data are collected in near-real time via >satellite to a downlink center located in Golden, Colo., and provided to >numerous customers including NOAA's Space Environment Center and the U.S. >Air Force Space Command Center. > >As the nation's largest water, earth and biological science, and civilian >mapping agency, the USGS works in cooperation with more than 2000 >organizations across the country to provide reliable, impartial, scientific >information to resource managers, planners, and other customers. This >information is gathered in every state by USGS scientists to minimize the >loss of life and property from natural disasters, to contribute to the >conservation and the sound economic and physical development of the >nation's natural resources, and to enhance the quality of life by >monitoring water, biological, energy, and mineral resources. > ### USGS ### > >This press release and in-depth information about USGS programs may be >found on the USGS home page: http://www.usgs.gov . To receive the latest >USGS news releases automatically by email, send a request to >listproc@................... . Specify the listserver(s) of interest from >the following names: water-pr; geologic-hazards-pr; biological-pr; >mapping-pr; products-pr; lecture-pr. In the body of the message write: >subscribe (name of listserver) (your name). Example: subscribe water-pr joe >smith. > > > >------------- End Forwarded Message ------------- * John C. and Jan H. Lahr * JohnJan@........ * 1925 Foothills Road * Golden, Colorado 80401-1718 * (303) 215-9913 * http://lahr.org/john-jan __________________________________________________________ Public Seismic Network Mailing List (PSN-L)
Larry Cochrane <cochrane@..............>