Wh yis seismic risk map useful?
952200
From USGS website, not copyrighted: \n"Hazard maps help save lives and property---\nNational maps of earthquake shaking hazards provide information essential to creating and updating the seismic design provisions of building codes used in the United States. Scientists frequently revise these maps to reflect new knowledge. Buildings, bridges, highways, and utilities built to meet modern seismic design provisions are better able to withstand earthquakes, not only saving lives but also enabling critical activities to continue with less disruption.\nAmerica's first line of defense against earthquakes has historically been the construction of buildings that can withstand severe shaking. Cities and counties rely on the seismic design provisions in building codes to ensure that structures can resist earthquakes. The variations in the seismic threat across the country are depicted on maps in building codes as zones of different risk levels. These building-code maps are based on more detailed shaking-hazard maps prepared by U.S. Government scientists."
1055203
hehehehehehe first of all i wud like to say u tht ther is no advantage of earthquakes, everything are disadvantages ok\n\nso as u say u need for your project then i shall surely help but if its the best one (and i know it will be) please give me the best answer ok.\n\nThe disadvantages or the effects of earthquakes are as follows : -\n\n1.GROUND SHAKING : - \nGround shaking is a term used to describe the vibration of the ground during an earthquake. Ground shaking is caused by body waves and surface waves. As a generalization, the severity of ground shaking increases as magnitude increases and decreases as distance from the causative fault increases. Although the physics of seismic waves is complex, ground shaking can be explained in terms of body waves, compressional, or P, and shear, or S, and surface waves, Rayleigh and Love. \n\nP waves propagate through the Earth with a speed of about 15,000 miles per hour and are the first waves to cause vibration of a building. S waves arrive next and cause a structure to vibrate from side to side. They are the most damaging waves, because buildings are more easily damaged from horizontal motion than from vertical motion. The P and S waves mainly cause high-frequency vibrations; whereas, Rayleigh waves and Love waves, which arrive last, mainly cause low-frequency vibrations. Body and surface waves cause the ground, and consequently a building, to vibrate in a complex manner. The objective of earthquake-resistant design is to construct a building so that it can withstand the ground shaking caused by body and surface waves.\n\nIn land-use zoning and earthquake-resistant design, knowledge of the amplitude, frequency composition, and the time duration of ground shaking is needed. These quantities can be determined from empirical (observed) data correlating them with the magnitude and the distribution of Modified Mercalli intensity of the earthquake, distance of the building from the causative fault, and the physical properties of the soil and rock underlying the building. The subjective numerical value of the Modified Mercalli Intensity Scale indicates the effects of ground shaking on man, buildings, and the surface of the Earth.\n\nWhen a fault ruptures, seismic waves are propagated in all directions, causing the ground to vibrate at frequencies ranging from about 0.1 to 30 Hertz. Buildings vibrate as a consequence of the ground shaking; damage takes place if the building cannot withstand these vibrations. Compressional waves and shear waves mainly cause high-frequency (greater than 1 Hertz) vibrations which are more efficient than low-frequency waves in causing low buildings to vibrate. Rayleigh and Love waves mainly cause low-frequency vibrations which are more efficient than high-frequency waves in causing tall buildings to vibrate. Because amplitudes of low-frequency vibrations decay less rapidly than high-frequency vibrations as distance from the fault increases, tall buildings located at relatively great distances (60 miles) from a fault are sometimes damaged.\n\n\n2.SURFACE FAULTING : - Surface faulting -- the differential movement of the two sides of a fracture at the Earth's surface-- is of three general types: strike-slip, normal, and reverse (or thrust). Combinations of the strike-slip type and the other two types of faulting can be found. Although displacements of these kinds can result from landslides and other shallow processes, surface faulting, as the term is used here, applies to differential movements caused by deep-seated forces in the Earth, the slow movement of sedimentary deposits toward the Gulf of Mexico, and faulting associated with salt domes.\n\n\nDeath and injuries from surface faulting are very unlikely, but casualties can occur indirectly through fault damage to structures.\n\nSurface faulting, in the case of a strike-slip fault, generally affects a long narrow zone whose total area is small compared with the total area affected by ground shaking. Neverthe
372305
http://www.mbr-pwrc.usgs.gov/bbs/anim/h3520.html
328674
Go the web-page below, u will almost all the details:-\n\nhttp://en.wikipedia.org/wiki/Seismic_retrofit
1150175
Earthquakes.. never know when they are going to hit nor how strong.  I have lived through them all and at least with the other 3 I have some warning....
1044728
The foci of earthquakes at transform boundaries tend to be at shallow depths.\n\nSee source.
614061
Not real sure what you want to do, but, go here;\nhttp://quake.wr.usgs.gov/research/deformation/modeling/eqmodel.html
579434
Go to the United States Geological Survey website at www.usgs.gov  They have a list of the most recent earthquakes. It's kind of a fun site to see anyway.
28973
The USGS has an excellent website documenting this earthquake with photos:\nhttp://pubs.usgs.gov/dds/dds-29/\nThe Virtual Museum of San Francisco has many more interesting reports and links:\nhttp://www.sfmuseum.org/1906/89.html\nThis USGS site has a good discussion and links on how to prepare for future earthquakes:\nhttp://quake.wr.usgs.gov/prepare/future/
96212
http://www.jsps.go.jp/english/e-asia/ronpaku/ab/INDONESIA1.html\nhttp://www.searchanddiscovery.com/documents/mcclay/index.htm\nhttp://earthquake.usgs.gov/regional/world/indonesia/images/eq_density.gif\nhttp://earthquake.usgs.gov/eqcenter/recenteqsww/Maps/region/Australia.php\n\nGoogle that shiz yo!
1100253
Deep-focus earthquakes are associated with convergent plate boundaries (subduction zones).\n\nSee source.
933800
I think you try this website :\nhttp://www.rigzone.com/news/article.asp?a_id=17787 \nhttp://forum.e46fanatics.com/showthread.php?t=121941 \nhttp://www.rigzone.com/news/article.asp?a_id=21239 \nhttp://forum.e46fanatics.com/showthread.php?t=273392&page=5 \nhttp://seismo.berkeley.edu/~rallen/eps20/extracredit/InTheNews.php \nhttp://www.eps.mcgill.ca/jargon/jargon.html
256702
Terraserver.com too out of date for you?\n\nYou could write to the USGS and/or the Canadian equivalent.\n\nMany public libraries keep such maps of their local areas.
369527
The 1997 Uniform Building Code set the standard on seismic design for buildings.  You might try searching for that on Yahoo!
616212
Check USGS (US Geological Service).
533491
check ou the US Geological Survey website. they should have maps and numbers for you.
508788
multimap is only a very good map,\ntry \nwww.terraserver.com