
	Where results make sense

Topic: Seismic hazard

Related Topics

Earthquake prediction

Scottish Parliament Building

Seismology

Country calling codes

UDMA

LORAN

Electronic dance music

Franz Joseph Haydn

Geophysics

Spanish and Portuguese names

Aza

Portsmouth, England

Flag of Northern Ireland

River Teme

	Seismic risk - Wikipedia, the free encyclopedia
		Seismic risk takes the results of seismic hazard analysis, and calculates the 'follies of man'.
		On the other hand, you can be located in a low seismic hazard district, such as New York City, in an ancient, poorly maintained brick building, suffering settlement problems on a filled swamp.
		A special subset is urban seismic risk which looks at the specific issues of cities.
	en.wikipedia.org /wiki/Seismic_risk (211 words)

	[No title] (Site not responding. Last check: 2007-10-23)
		Seismic Hazard Zone 4 runs along California's coast from parts of San Diego County in the south through Humboldt County in the north,.
		Note that the Seismic Safety Commission's primary function is to advise the governor and the legislature and coordinate the responsibilities of State agencies on issues regarding seismic safety.
		Hazardous materials are often stored in older buildings that may collapse in earthquakes or otherwise cause leaks capable of endangering the public.
	www.fema.gov /txt/hazards/earthquakes/nehrp/fema-254-10-ca.txt (2859 words)

	Seismic Hazard Assessment of Iran
		From 1930 to 1985, the seismicity analysis of Iran was conducted by Wilson(1930), Niazi and Basford (1968), Nowroozi (1972, 1976), Banisadr (1971), Ambraseys and Moinfar (1973), Berberian (1973) and Tchalenko (1975).
		The preparation of an earthquake hazard map is the delineation of the seismotectonic province and the assessment of the associated maximum earthquake potentials.
		Seismic hazard maps have been prepared to indicate the earthquake hazard of Iran in the forms of iso-acceleration contour lines, and seismic hazard zonation.
	www.seismo.ethz.ch /gshap/iran/report.html (2367 words)

	Seismic hazard -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-23)
		Although greatly confused with its sister, (additional info and facts about seismic risk) seismic risk, seismic hazard is the study of expected earthquake ground motions at any point on the earth.
		For example, the famous (A major geological fault in California; runs from San Diego to San Francisco; the source of serious earthquakes) San Andreas Fault might be drawn as a long narrow zone.
		Zones in the continental interior (the site for (additional info and facts about intraplate earthquake) intraplate earthquakes) would be drawn as broad areas, since causative faults are generally not identified.
	www.absoluteastronomy.com /encyclopedia/s/se/seismic_hazard.htm (457 words)

	SEISMIC HAZARD CALCULATIONS (Site not responding. Last check: 2007-10-23)
		In Canada, the evaluation of regional seismic hazard for the purposes of the National Building Code is the responsibility of the Geological Survey of Canada.
		The seismic zoning maps prepared by the Geological Survey are derived from statistical analysis of past earthquakes and from advancing knowledge of Canada's tectonic and geological structure.
		On the maps, seismic hazard is expressed as the most powerful ground motion that is expected to occur in an area for a given probability level.
	www.seismo.nrcan.gc.ca /hazards/zoning/haz_e.php (1044 words)

	Chief Building Official, Seismic Hazard Mitigation Program for High-Risk Buildings
		Council has asked staff to create a seismic hazard mitigation program for high-risk buildings in Vancouver with the aim of developing a long term strategy to prepare for and reduce the impact of a major earthquake on our seismically vulnerable buildings.
		Seismic hazard is danger to the public when an earthquake occurs.
		This hazard may be either ‘structural’, which relates to a building’s ability to resist collapse during an earthquake, or ‘non-structural’, which includes falling hazards such as chimneys, parapets, cornices, canopies, suspended ceilings and light fixtures, etc. The intent of the program is to mitigate, or reduce, the impact of this hazard.
	www.city.vancouver.bc.ca /commsvcs/cbofficial/sesmicupgrade.htm (1977 words)

	Earthquake Monitoring and Seismic Hazard Assessment in the Vicinity of the Paducah Gaseous Diffusion Plant, Paducah , ...
		Thus, the use of the USGS hazard maps has resulted in higher seismic design requirements in the Paducah area than anywhere in California, even though it is well documented that California has higher seismic hazard and risk.
		Probabilistic seismic hazard mapping is a confusing topic, since most people have difficulty understanding statistics (Communicating with Uncertainty: A Critical Issue with Probabilistic Seismic Hazard Analysis).
		The maps that were produced have been incorrectly communicated in the New Madrid Seismic Zone, the meaning of the ground motion with 2 percent PE in 50 years is a ground motion with about an 80 percent chance of not being exceeded if a characteristic earthquake of M7.7 occurs.
	www.uky.edu /KGS/geologichazards/research1.htm (871 words)

	UUSS - Glossary of Terms
		Rayleigh wave A seismic surface wave involving elliptical motion in a vertical plane oriented in the direction of propagation of the wave.
		S wave A seismic body wave involving shear motion transverse to the direction of propagation of the wave.
		seismic hazard analysis An orderly approach to quantifying the extent to which a site or a region is exposed to earthquake hazards.
	www.seis.utah.edu /qfacts/glossary.shtml (3403 words)

	Seismic hazard map of the Cleveland South quadrangle
		This potential is determined by past regional seismicity and effects of the surficial geology.
		The variation in seismic hazard across the quadrangle due to proximity to regional epicenters is of the same order of magnitude as that due to heterogeneity in surficial geology.
		The net effect is a seismic hazard in the Cuyahoga Valley that is three times that at Burton.
	www.dnr.state.oh.us /OhioSeis/research/hovhanni.htm (365 words)

	Victoria Earthquake Maps (Site not responding. Last check: 2007-10-23)
		The PDF files for each of the earthquake hazard maps have been created in a high resolution format to maximize their legibility and are best viewed by downloading and using the zoom functions in Adobe Acrobat or by generating large-format hard copy output, e.g., E-size plots (36" x 48").
		Composite Relative Earthquake Hazard Map of Greater Victoria (Geoscience Map 2000-1): The objective of this map is to show areas of Greater Victoria where the earthquake hazard is likely to be increased due to the presence of potentially unstable slopes, and soils susceptible to amplification of ground motion and/or liquefaction.
		The seismic slope hazard map is based on a compilation of existing subsurface data, previous slope stability assessments, bedrock geology and surficial geology maps, topographic data, and airphoto interpretation.
	www.em.gov.bc.ca /Mining/Geolsurv/Surficial/hazards (606 words)

	SEIZE Workshop Report
		Seismic sources must be large to penetrate to the needed depths, yet contain a broad-band spectrum of energy to preserve resolution and allow waveform inversions of the seismic reflections.
		Seismicity: The current interplate seismicity is extremely low; the thrust plane is the quietest of all subduction zones with respect to shallow thrust earthquakes on the plate boundary (Fig.
		General seismicity of the region indicates a geometry consistent with a shallow plate dip in the forearc region and a rapid increase in dip under the volcanic front to nearly vertical under the backarc basin.
	www.soest.hawaii.edu /moore/seize/report.html (12190 words)

	ESRI Map Book Gallery Volume 17: Mining and Earth Sciences - Seismic Hazard Maps for Southeast Asia
		Seismic hazard maps produced by the U.S. Geological Survey are based on current information about the rate at which earthquakes occur in different areas and how far earthquake shaking extends from the earthquake source.
		By estimating the shaking hazard from earthquakes, scientists and engineers are laying the groundwork for providing information about designing infrastructure that can resist the effects of earthquakes.
		The map on the right displays 1964--2000 seismicity in southeast Asia and seismic source zones used in hazard analysis.
	www.esri.com /mapmuseum/mapbook_gallery/volume17/mining10.html (170 words)

	Probabilistic Seismic Hazard Analysis - A Primer (Site not responding. Last check: 2007-10-23)
		The goal of probabilistic seismic hazard analysis (PSHA) is to quantify the rate (or probability) of exceeding various ground-motion levels at a site (or a map of sites) given all possible earthquakes.
		If there is epistemic uncertainty, then we end up with a family (or distribution) of hazard curves (in Figure 5 we have two choices, or a binomial distribution); that is, the hazard curve itself is uncertain.
		Seismic hazards in southern California: probable earthquakes, 1994 to 2024.
	www.relm.org /tutorial_materials/PSHA_Primer (2460 words)

	USGS Pacific Northwest Earthquake Hazards-Summaries of research efforts (Site not responding. Last check: 2007-10-23)
		Using seismic reflection and surface mapping, geologists are attempting to determine the location, geometry, and slip rates of active faults in the Puget Lowland.
		Investigating the regional seismic hazard includes study of regional fault zones in Portland using high-resolution seismic imaging (seismic reflection), imaging of the Columbia River- Snake River system using wide-angle seismic refraction, and testing of regional tectonic models in detailed studies of Mount Saint Helens and Mount Ranier seismic zones, and selected volcanic vent patterns.
		Improving the reliability and usability of detailed seismic hazard maps is a major goal of multidisciplinary studies underway in and with the USGS.
	earthquake.usgs.gov /regional/pacnw/objectives.html (1045 words)

	SEISMIC HAZARD ASSESSMENT, ONONDAGA COUNTY, NEW YORK
		Seismic shear-wave data collection is expanding the database for the projection statewide of seismic hazards and is obtaining detailed information about the varied surficial materials across New York State.
		The landslide hazard evaluation from HAZUS requires the characterization of the landslide susceptibility of the soil/geologic conditions of a region.
		The composite seismic hazard in Onondaga County represents an overlay of areas within the County that have Liquefaction values of Very High or High, Ground Shaking Amplification values of 4 or 5, and Landsliding values of 8, 9 or 10, when the surficial materials are either wet or dry.
	www.nysm.nysed.gov /gis/geo_semo97.html (3737 words)

	Earthquake Scenario and Probabilistic Ground Shaking Maps for the Portland, Oregon, Metropolitan Area
		In the portrayal of the Cascadia subduction zone scenario, the uncertainties in the geometry and eastward extent of the rupture are particularly large.
		This modeling explicitly incorporates the effects of the seismic source (fault geometry and dip, depth of rupture initiation, and sense of slip) and rupture propagation (e.g., directivity), which are particularly important in the near field.
		The mean probabilistic hazard was calculated for peak horizontal acceleration and 0.2- and 1.0-second spectral accelerations at the two return periods of 500 and 2,500 years.
	nwdata.geol.pdx.edu /DOGAMI/IMS-16/Text/IMS-16-CD-TEXT.html (7234 words)

	Seismic Hazard on the Island of Hawaii (Site not responding. Last check: 2007-10-23)
		In 1970, Hawaii Island was assigned to seismic zone 3, the next to highest hazard zone, based on its history of large earthquakes.
		In 1970, the highest seismic zone (zone 4) was reserved for regions inside zone 3 that were in close proximity of known major fault systems.
		There are a series of animations that show seismic activity through time on the Island as well as some animations showing the sequence of events during the 1989 Loma Prieta earthquake in California.
	hvo.wr.usgs.gov /volcanowatch/1994/94_08_05.html (984 words)

	NYC Seismic Hazard Study and The NYCDOT Seismic Design Guidelines (Site not responding. Last check: 2007-10-23)
		Weidlinger’s final report, which includes the seismic design guidelines, describes the seismic hazard in New York City, integrating the wide range of opinions held by the expert panel members concerning the factors that affect seismic hazard, such as seismic source interpretations and ground motion estimates for the region.
		A major issue of seismic design is to establish criteria for different levels of structural performance, which address the survivability of the bridge after an earthquake.
		The performance criteria are determined by (a) the importance of the bridge (defined by factors such as the strategic necessity and use pattern of the bridge, not easy to quantify and necessarily subjective) and (b) the extent of potential damage.
	www.wai.com /Transportation/Seismic/guidelines-1000.html (1468 words)

	Hazard maps Fact Sheet
		The variations in the seismic threat across the country are depicted on maps in building codes as zones of different risk levels.
		For example, the shaking hazard in Boston is far lower than that in Los Angeles, but the damage to structures throughout the Boston area would be much greater if a strong earthquake struck today.
		Through the continuing process of refining estimates of the shaking hazard across the Nation and observing successes and failures in building design, scientists and engineers are laying the groundwork for future urban environments that will be safer in earthquakes.
	quake.wr.usgs.gov /prepare/factsheets/RiskMaps (1126 words)

	Himalaya Seismic Hazard c Science2001
		The amplitudes of long-period seismic waves have provided quantitative measures of the seismic moments (a measure of earthquake size) of the 1934 and 1950 earthquakes (17).
		Knowledge of the lengths of the ruptures and sensible estimates of the width from various sources yield ~4 m of slip in 1934 and ~8 m of slip in 1950 (18).
		The enforcement of building codes in India and Pakistan mitigates the hazards to this large population, but a comparison between fatalities in the 1819 Katchch and 2001 Bhuj earthquakes is not encouraging.
	cires.colorado.edu /~bilham/HimHazardScience.html (2009 words)

	New Technique Uses Seismic 'Garbage' To View Earth's Interior
		Seismic Rocker Aims To Cut The Noise (February 28, 2005) -- A Canadian seismologist is arguing that our understanding of the structure of the Earth's interior is based on the equivalent of fuzzy ultrasound images that leave room for...
		"The authors' application of what used to be 'seismic noise' to the detailed mapping of the crust and upper mantle will have significant impact on earth science and on seismic hazard mitigation," says James Whitcomb, head of NSF's deep earth processes section, which funded the research.
		Seismic tomography is like doing a medical CT scan of the Earth, Ritzwoller said.
	www.sciencedaily.com /releases/2005/03/050325154427.htm (713 words)

	IASPEI Brochure
		The Subcommission on Earthquake Hazard and Risk is charged with the advancement of methods to estimate seismic hazard or risk and the evaluation of proposed methodologies.
		The ultimate goal is to develop seismic hazard, structural vulnerability, and damage cost functions expressed in terms of instrumental measures of ground motion, such as peak accelerations or velocities, or values of response spectra at selected frequencies.
		Laboratory measurements of wave attenuation in mantle-like materials and the resulting velocity dispersion at seismic frequencies (0.001 to 10 Hz) are essential for interpreting seismic wave data in terms of the composition and properties of the interior of the Earth.
	www.iaspei.org /brochure/brochure.html (8803 words)

	Cascadia Seismic Hazard Studies - USGS WCMG (Site not responding. Last check: 2007-10-23)
		Seismic Hazards Investigation in Puget Sound: In March, 1998, a U.S./Canadian Consortium collected seismic data in Puget Sound and the Straits of Juan de Fuca and Georgia to investigate the regional earthquake hazard.
		In 1995 and 1996, seismic experiments were conducted on land by the USGS and at sea with the German research group GEOMAR (Christian-Albrechts University, Kiel, Germany) who brought their ship F.S. Sonne to Cascadia.
		These studies are part of larger, ongoing USGS and university investigations that are studying the 300 BP (years before present) and 1100 BP seismic events, and are important to delineating the seismic history of the Pacific Northwest.
	walrus.wr.usgs.gov /cascadia (685 words)

	SEISMIC HAZARD MODEL
		It was developed within the framework of several recent projects on global and regional seismic hazard assessment and allows for homogeneous hazard computation throughout the whole European-Mediterranean domain.
		This Unified Hazard Modeling for Europe and the Mediterranean will contribute to the establishment of a regional seismic hazard framework for the region in terms of peak ground and spectral acceleration from which seismologists, geologists and earthquake engineers can profit as a general guideline.
		The Seismic Hazard Map of the European-Mediterranean region, in terms of peak ground acceleration at a 10% probability of exceedance in 50 years for stiff soil conditions, has been published in 2003 under the auspices of the European Seismological Commission (ESC) in 5000 copies.
	wija.ija.csic.es /gt/earthquakes (201 words)

	Trial Seismic Hazard Maps - Open File Release Info (Site not responding. Last check: 2007-10-23)
		In response to the increased demand for seismic hazard information, the Geological Survey of Canada is releasing GSC OF 4459 in digital form.
		The Open File describes the methods being used for the new seismic hazard maps of Canada and estimate median ground motion on firm soil sites for a probability of exceedence of 2% in 50 years.
		Values are tabulated for more than 650 localities to be listed in the next Code and included are maps of seismic hazard for Canada.
	www.pgc.nrcan.gc.ca /seismo/eqhaz/ofrel.htm (291 words)

	[No title] (Site not responding. Last check: 2007-10-23)
		APPENDIX D SELECTED SEISMIC SAFETY REFERENCES INTRODUCTION This list of references focuses on the national arena generally and on the three specific geographic areas examined by the BSSC Committee on Societal Implications: the Mississippi Valley area; the Charleston, South Carolina, area; and the Puget Sound area.
		Earthquake Hazards and Risk in South Carolina and the Southeastern U.S. Charleston, South Carolina: Seismic Safety Consortium.
		Regional Tectonic and Earthquake Hazard Implications of a Crustal Fault Zone in Southwestern Washington.
	www.fema.gov /txt/hazards/earthquakes/nehrp/fema-84-app-d.txt (2608 words)

Try your search on: Qwika (all wikis)