
	Where results make sense

Topic: Urban seismic risk

Related Topics

Earthquake liquefaction

Landslide

	Seismic risk analysis in thirty municipalities of the Etnean conurbation.
		In a risk area such as the Sicilian one, where the intervals between events is still unforeesable, and in any case rather protracted, the only feasable approach to all prevention actions must take into account the needs of a culture that must live together with seismic risk at a humanly and economically acceptable cost.
		Seismic risk can be defined as being the product of the location’s seismic danger multiplied by the vulnerability of building structures (be they single buildings or building networks), and by the damages caused to things and persons.
		Urban structures improvements must be based on the interrelation of three scales of intervention, which will provide : - a general frame-work of the necessary mesures; - a set of "objective" intervention priorities;- a cost plan;- a set of choices in function of the economic resources.
	www.unict.it /dau/narciso/aiu5.html (1731 words)

	Urban seismic risk - Wikipedia, the free encyclopedia
		Urban seismic risk is special subset of the general term seismic risk.
		Similar to methodologies used in nuclear reactors, a seismic walkdown of the city is the best way to identify vulnerabilities and possible places for improvement.
		Unfortunately, there are many places where the seismic risk (for damage) is quite high.
	en.wikipedia.org /wiki/Urban_seismic_risk (371 words)

	Seismiccode - Article (Site not responding. Last check: 2007-10-10)
		By adopting and enforcing seismic code provisions now, communities can help to ensure that new buildings are designed to standards appropriate to that area’s known level of seismic risk.
		Current known seismic risks for various areas are captured in the national seismic hazard map.
		Casualty losses from previous seismic events are documented and explained, along with clear technical explanations of ground-shaking and the potential damage to various kinds of structures.
	www.urban.uiuc.edu /seismiccode/article1.html (699 words)

	Global urban seismic risk
		Global earthquake risk has more than quadrupled in the past century as a result of global urbanization.
		The total urban population by 2050 may exceed 5 billion people, (roughly half the 2050 world total, and equal to the year 1997 world total population).
		The destructiveness of infrequent large fatality earthquakes is aggravated by the growth of large numbers of urban targets.
	cires.colorado.edu /~bilham/UrbanEarthquakesGlobal.html (604 words)

	Urban Seismic Hazard Mapping
		The National Seismic Hazard Maps show the potential for damaging earthquakes and the strength of ground shaking on a much broader scale, and do not take into account local and regional geological structures and soil conditions, which may have strong amplifying or damping effects on ground shaking.
		Urban seismic hazard mapping activities were initiated by the USGS in 1998, with three projects focussed on high-resolution seismic hazard assessments in at-risk urban areas of the U.S. These assessments reflect local conditions and also address ground failure hazards such as liquefaction and earthquake-triggered landslides.
		The urban hazard mapping process and its products have the potential to impact future National Seismic Hazard Maps as data and models developed for the urban mapping products will be used in national map updates.
	earthquake.usgs.gov /regional/ceus/urban_map/index.php (516 words)

	AASPE Pilot Projects ASC (Site not responding. Last check: 2007-10-10)
		The seismic risk composed of seismic hazard, vulnerability and the elements at risk (population, structures, utilities, systems, socio-economic activities and many other) for which loss can be calculated.
		The brief review of the current status in national seismic risk assessment shows that there is not even a global framework for seismic risk assessment to serve as a resource for any national and regional agency to develop further detailed study applicable to their country needs.
		Current seismic hazard assessment based on intermediate results of earthquake prediction research is one of the promising elements in Seismic Risk Reduction Strategy for early warning and notification.
	www.aaspe.am /AASPE/project02.htm (5958 words)

	Seismic Risk Models (Site not responding. Last check: 2007-10-10)
		The objective of this section is to explain seismic risk modelling in greater depth, for the purposes of model examination and assessment of model output.
		As risk analyses are performed, it will become increasingly imperative that those individuals responsible for risk management of the exposures understand the methods and models used, and the meaning of the results produced.
		Seismic shaking, however, will be the only portion of the model reviewed and evaluated in depth since it is responsible for most of the damage associated with an earthquake.
	www.utoronto.ca /env/nh/pt4ch6-1.htm (1226 words)

	International initiative of risk reduction in urban areas
		The comparative study on "Understanding Urban Seismic Risk Around the World" aims to better understand various aspects contributing to the seismic risk in different urban areas of the world, and identify solutions and risk management practices that have been successful and can be duplicated.
		The results of the seismic risk assessment by applying the tools are too general, and they must be regarded as the very first step for the seismic risk assessment.
		They will be able to understand the seismic risk of the city so that they could minimize the damage on their business.
	www.gisdevelopment.net /application/nrm/mountain/mounm0002.htm (929 words)

	At Risk: Marsh Risk Consulting
		Seismic activity within the crater of Mount St. Helens is currently being recorded at a rate of three to four events per minute, with magnitude 3 to 3.3 quakes occurring every few minutes.
		With no urban populations in the area immediately surrounding Mount St. Helens, much of the damage from the 1980 eruptions resulted from falling ash.
		Once the risk is properly understood and quantified, organizations should review their business continuity plans and emergency response capabilities to ensure that people know what to do in the event of an eruption.
	www.marshriskconsulting.com /st/PDEv_C_370_NR_306_PI_528059.htm (773 words)

	Urban Sector Strategy - ADB.org
		In many urban areas capacity building is crucial to enable governments to fulfill their existing mandate, let alone take on the new skills required.
		The problems of managing urban growth and improving the competitiveness and livability of urban areas are common to many countries.
		Improved systems for urban planning and regulation should continue to give strategic guidance on urban expansion and renewal policies, and to address the externalities arising from land development such as pollution.
	www.adb.org /Documents/Policies/Urban_Sector/urban0404.asp?p=policies (1270 words)

	Earth Systems and Human Well-Being: Causes and Consequences II - Union [U]
		A recent study of risk perception conducted in four diverse districts of Istanbul indicates that risk perception is critical to understanding patterns of vulnerability across legal and illegal districts.
		However, contrary to assumptions that the most vulnerable residents are those least able to make risk decisions, this study shows that residents of unauthorized housing districts, while being exposed to elevated seismic risk, are most likely to take actions that impact their risk.
		Yet, despite considerable effort to reduce exposure to seismic risk, a lack of knowledge regarding the components of hazard and vulnerability often results in actions that are ineffective or have created heightened vulnerability.
	www.agu.org /meetings/fm05/fm05-sessions/fm05_U53B.html (2137 words)

	Seismic Risk Models (Site not responding. Last check: 2007-10-10)
		Some seismic risk models have been developed to aid the insurance industry with risk management via the estimation of the probable maximum loss.
		The seismic hazard module uses the location and magnitude of an earthquake, specified in step 1, to estimate the probability of seismic hazard for either individual sites, or the insurance portfolio as a whole.
		Seismic risk modelling is to be used as a diagnostic
	www.utoronto.ca /env/nh/pt4ch6-2.htm (925 words)

	American Society of Civil Engineers (ASCE)
		Purpose: The Seismic Risk Committee is charged with developing procedures for seismic risk analysis, including risk from geological hazards, which can be used to formulate sound design criteria.
		In conjunction with the risk and vulnerability committee of the Council on Disaster Reduction (CDR), the seismic risk committee has currently completed an ASCE monograph on Acceptable Risk Processes: Lifelines and Natural Hazards.
		Those members who have not already committed to drafting papers for the acceptable risk monograph may be asked to serve as reviewers for papers planned for this monograph.
	www.asce.org /inside/tclee_seisrisk.cfm (185 words)

	Urban Natural Disaster Risk Index (Site not responding. Last check: 2007-10-10)
		The Earthquake Disaster Risk Index (EDRI) is a composite index that allows direct comparison of the relative overall earthquake disaster risk of cities worldwide, and describes the relative contributions of various factors to that overall risk.
		The Urban Natural Disaster Risk Index (UNDRI) is adapted from the EDRI in order to measure the social and economic disruption caused at the national and local level by an earthquake.
		External Context and Exposure have been removed since the risk to an individual is independent of the size of the city, the number of housing units, or the city's economic significance.
	pangea.stanford.edu /~tucker/eri/eridesc.html (1316 words)

	Invited Speakers
		The second is the use of displacement as a criterion for assessing the seismic performance of embankment dams and planning remediation measures, especially when there is a potential for liquefaction in the dam itself or in the foundation.
		The third development is the emergence of seismic risk and reliability analysis as an aid to determining the dominant failure modes of the dam, the probability of occurrence of unacceptable damage, and the associated probabilities of both economic losses and loss of life.
		Key phenomena associated with the seismic interplay between soil, foundation, and structure are introduced and the available methods briefly explained.
	www.engr.washington.edu /epp/Quake/speakers.html (1725 words)

	BGHR Seismic Risk Group (Site not responding. Last check: 2007-10-10)
		The range of impacts and earthquake phenomena are of concern to a variety of professions including the insurer, the builder and earthquake engineer and the teams that plan the efficient use of urban land to mitigate against the worst effects of earthquake ground shaking.
		Seismic hazards can be low and rare or high and relatively frequent, the consequences usually being losses to buildings and infrastructure, insured or otherwise, and fatalities.
		Estimation of risk and expected losses in future scenario earthquakes requires knowledge of building stock in an urban area and building vulnerability to earthquake ground shaking, again a vital area of study.
	www.uea.ac.uk /env/srg (476 words)

	Urban: The Urban Age Magazine: Disaster Management Issue
		With the increasing concentration of population and economic activity in rapidly growing cities, its urban areas are more vulnerable than ever.
		A law has been enacted for buildings to meet seismic standards; tax credits and tax exemptions are available to help companies enforce this.
		Despite its location in the seismic zone of west Java, Bandung has not experienced a devastating earthquake during the past 100 years, and therefore little awareness of urban seismic risk exists among the general public and decision-makers.
	www.worldbank.org /html/fpd/urban/urb_age/disastermgt/asiarisk.htm (1233 words)

	Global Seismic Risk (Site not responding. Last check: 2007-10-10)
		The growth of these giant urban agglomerations is a new experiment for life on Earth.
		Tragically, a significant fraction of the largest of these agglomerations (supercities and megacites) are located close to regions of known seismic hazard.
		Given this grim setting it is clear that today's generation of seismologists have a responsibility to educate the urban planners of today, who are responsible for the seismic safety of the next generation of city dwellers.
	cires.colorado.edu /~bilham/globalEQfatalities.html (614 words)

	Hazard maps Fact Sheet
		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.
		The variations in the seismic threat across the country are depicted on maps in building codes as zones of different risk levels.
		The USGS is now working with the Building Seismic Safety Council (BSSC), funded by FEMA, to produce new seismic-risk maps for the United States from the 1996 versions of USGS shaking-hazard maps.
	quake.wr.usgs.gov /prepare/factsheets/RiskMaps (1126 words)

	Earth Institute Researchers Present Their Work at the American Geophysical Union Fall Meeting (Site not responding. Last check: 2007-10-10)
		Art Lerner-Lam, director of the Center for Hazards and Risk Research at the Earth Institute, and his colleagues published Natural Disaster Hotspots: A Global Risk Analysis in 2005, which looked at the global distribution and occurrence of multiple natural hazards and the associated exposures of populations and their economic output.
		Jessika Trancik and her colleagues present the results of their study comparing the health and environmental risks associated with the widespread use of photovoltaic cells for electricity generation compared to those of common non-renewable options (coal, oil, gas and nuclear).
		She finds that there is a critical need for scientists and engineers to engage residents of unauthorized housing and that residents are themselves able to quickly turn knowledge about hazards and vulnerability into actions that can reduce their own risk as well as the aggregate risk that urban centers face.
	www.earthinstitute.columbia.edu /news/2005/story12-02-05b.html (2602 words)

	Invitation to Member Cities -- the RADIUS Project (Site not responding. Last check: 2007-10-10)
		The associate cities must have conducted or are conducting a similar study for the seismic risk assessment.
		It is a comparative study on the earthquake risk and management practices of the RADIUS cities.
		First, the cities will gain a better understanding of the characteristics of, and factors that contribute to their seismic risk - including the city's vulnerability, economic exposure, and emergency response and recovery capabilities.
	pangea.stanford.edu /~tucker/Radius/member*.html (570 words)

	Water Resources Section [UNESCAP/ESDD]
		This is particularly urgent for the coastal lowlands of the region, habitat to an estimated 1.7 billion people, and even more so for the urban centres, most of which are located in the coastal zone.
		The resulting thematic maps may, e.g., show zones of different seismic risk levels, areas of adequate groundwater supply, safe sites for waste disposal, locations of natural constructon materials, even zones with calculated costs of construction per unit area, etc.
		Urban flooding due to land subsidence associated with groundwater overexploitation
	www.unescap.org /esd/water/urbangeology/geo_environment.asp (240 words)

	International Strategy for Disaster Reduction (ISDR)
		The approach adopted for hazard mapping and risk assessment by the Katmandu Valley Earthquake Risk Management Project in Nepal is an excellent example of what can be achieved with simple and affordable but methodical techniques.
		Beyond the public education values served by the map, the joint exercise in producing it was instrumental in initiating cross border dialogue and the sharing of knowledge between hazard experts and national, provincial and local organizations with interests in supporting hazard awareness and risk reduction in the three countries.
		The most significant example of European cooperation relating to hazards and risk management is the EUR-OPA Major Hazards Agreement of the Council of Europe, which has the objective of enhancing multidisciplinary cooperation between member states to ensure better prevention, protection and relief in the event of major natural or technological disasters.
	www.unisdr.org /eng/media-room/facts-sheets/fs-good-practices.htm (2061 words)

	STATEMENT OF DAVID APPLEGATE
		A great deal of critical infrastructure is located in seismically active areas of the Nation, as well as in homes, schools, hospitals and other important structures that make up the built environment. These seismically active areas affect 150 million people in 39 states.
		The national seismic hazard maps are also used in the FEMA retrofit guidelines, ensuring that older buildings are strengthened so that they withstand future earthquakes.
		ANSS sensors in urban areas also provide the data necessary to improve earthquake resistant building design and construction practices. These instruments will provide quantitative data on how the ground actually shook during an earthquake. The data will inform engineering studies to improve site characterization and infrastructure performance.
	www.doi.gov /ocl/2004/HR2608.htm (1893 words)

	The USGS Earthquake Hazards Program in NEHRP— Investing in a Safer Future \| USGS Fact Sheet 017-03
		Seismic provisions in both the 2000 International Building Code (the merging of the three major national model codes) and codes have now been adopted by jurisdictions in 37 states.
		Completing the Advanced National Seismic System—A major obstacle to further reducing loss of life and property in earthquakes is the present scarcity of strong-motion recordings of actual ground-shaking levels in urban areas and of the dynamic performance of structures and lifelines in quakes.
		Because of the relatively small urban population, many people assume that the risk is low in comparison to the rest of the country.
	pubs.usgs.gov /fs/2003/fs017-03 (3875 words)

	[26 Nov 1999] IHA/692 : PROGRESS NOTED IN EFFORTS TO REDUCE EARTHQUAKE IMPACT (Site not responding. Last check: 2007-10-10)
		The initiative of the disaster reduction Secretariat for seismic risk reduction has also produced a comparative study on understanding urban seismic risk around the world and/or present vulnerabilities of selected cities, guidelines for risk management and a manual for preliminary earthquake damage assessment.
		The developed tools will help plan urban priorities for safe cities and improve the management of earthquake damage.
		Seismic risk reduction is a long term issue.
	www.un.org /News/Press/docs/1999/19991126.iha692.doc.html (369 words)

	WBDG: Accommodate Life Safety and Security Needs
		The challenge of seismic upgrades in historic buildings is to accommodate strengthening in ways that do not interfere with the building fa…ade or the volume and features of significant public spaces.
		Before security measures are designed, a threat/vulnerability assessment and risk analysis should be conducted to determine the potential threats and acceptable levels of risk.
		Although fire safety improvements—particularly early warning detection and quick response suppression—help to reduce the risk of devastating historic building losses, their potential to compromise historic fabric often leads to resistance against egress code compliance.
	www.wbdg.org /design/accommodate_needs.php (1791 words)

Try your search on: Qwika (all wikis)