Geological survey in order to identify the preevent timewindow for systematic and automated processing of large numbers of accelerograms. Apr, 2011 seismic calculator posted on april, 2011 by steve the usgs seismic design maps and tools for engineers is a great resource for quickly finding seismic design coefficients for different design codes. For more maps and related information, visit the usgs earthquake hazards program. Jump to navigation risktargeted ground motion calculator. Nicolas luco is a research structural engineer with the u.
Geological survey of canada open file 4459 earthquakes canada. Request for nominations, april 10, 2019 federal register notice pdf 82kb. The usgs collaborates with organizations that develop building codes for buildings, bridges, and other structures to make seismic design parameter values available to engineers. Seismic calculator, free seismic calculator software downloads. This tool is used to calculate risktargeted ground motion values from probabilistic seismic hazard curves in accordance with the sitespecific ground motion procedures defined in method 2 of 2010 asce 7 standard section 21. National archive of marine seismic surveys home usgs. The 2014 codes are the current master, and also tagged as nshm2014r1. We present the results of a new probabilistic seismic hazard assessment for guam and the northern mariana islands.
Quickly retrieve site structural design parameters specified by asce 710 and asce 716, including wind, seismic, snow, ice, rain, flood, and tsunami. National seismic hazard model defines the potential for earthquake ground shaking for various probability levels across the conterminous united states and is applied in seismic provisions of. The input data to the model, as well as the output data are available here. National earthquake hazards reduction program reauthorization act of 2018. Usgs earthquake hazards program, responsible for monitoring, reporting, and researching earthquakes and earthquake hazards. Seismic hazard curves and uniform hazard response spectra for. Clicking the list icon in the top right corner will load the earthquake list. Software to download usgs earthquake hazard program.
Seismic calculator software free download seismic calculator. Geological survey usgs, its partners, and external groups developed urban seismic hazard maps urban models and maps that consider detailed site effects in local areas e. Displays answers of loan amounts, interest rates, terms in months, or payment amounts based upon your loan variables. To date, all globalscale sets of parameter values referenced by the tool are based upon peak ground acceleration pga values with a 10% probability of exceedance in 50 years from the global seismic hazard assessment program gshap study. Macr1d is a onedimensional seismic traveltime calculator for macintosh. National seismic hazard mapping project nshmp code. We investigate the impact of different rupture and attenuation models for the cascadia subduction zone by simulating seismic hazard models for the pacific northwest of the u. The seismicat singlesite tool uses updated usgs ground motions 2014 and 2008 computed directly for the specific site class rather than scaled from soft rock bc site condition. The map is based on the most recent usgs models for the conterminous u. Seismic design tools for engineers natural resources canada. The software can also peas well as probabilistic seismic hazard psha and risk psra modeling. Geological survey usgs seismic hazard maps, the nehrp recommended provisions seismic design.
Then, the usgs calculates values of seismic design parameters based on usgs hazard. Seismicat provides an online seismic risk assessment tool for building property owners, lenders, insurers and municipal analysts. Using the usgs seismic hazards mapping utility asce library. Earthquake load equivalent static method nbc 2010 earthquake load equivalent static method nbc 2010 version 0. The global seismic hazard map is a product of the global seismic hazard assessment program gshap, launched in 1992 and terminated last year, which was part of the united nations international decade for natural disaster reduction. To run them, you need to have java installed, preferably version 8 or higher. Downloading a list of earthquakes will download the worldwide list of.
As an objectoriented framework, opensha can accomodate arbitrarily complex e. This software is in the public domain because it contains materials that originally came from the united states geological survey, an agency of the united states department of interior. We calculate the sensitivity of hazard probabilistic ground motions to the source parameters and the attenuation relations for both intraslab and interface earthquakes and. Earthquake scenarios describe the expected ground motions and effects of specific hypothetical large earthquakes. Then, enter values for story heights above grade and seismic weight approximately equal to the dead load for. Documentation june 1996 by arthur frankel, charles mueller, theodore barnhard, david perkins, e. Where faults cannot be identified or characterized, alternative sources can be developed from seismicity catalogs.
The following desktop applications were built with opensha and allow you to explore different aspects of seismic hazard. Risktargeted ground motion calculator usgs earthquake hazards. Click on title to download individual files attached to this item. Seismic hazard, risk, and design for south america. Earthquake hazard map showing peak ground accelerations having a 2 percent probability of being exceeded in.
With each release or update of a national seismic hazard model nshm, a variety of earthquake catalogs are compiled and subsequently processed to remove duplicate, dependent foreshocks and aftershocks, and anthropogenic events. The updated model represents an assessment of the best available science in earthquake. The applications are all written in java and are bundled as doubleclickable jar files. Utilities to extract temperature profiles and related information from the ncm thermal model. Usgs software tools for sitespecific ground motion hazard. These data were calculated to estimate seismic hazard, risk, and design across south america using the latest data, models, and methods. Geological survey usgs recently completed new probabilistic seismic hazard maps for the united states. The usgs earthquake hazards program is part of the national earthquake hazards reduction program nehrp, established by congress in 1977, and the usgs advanced national seismic system anss was established by congress as a nehrp facility. Geological survey usgs national seismic hazard models nshm consider two kinds of earthquake sources. Seismic hazards are calculated considering consensus values for earthquake rates based on earthquake history, fault slip rates, and site soil types. Updated continental scale seismic hazard models are based on a new seismicity catalog, seismicity rate models, evaluation of earthquake sizes, fault geometry and rate parameters, and. About latest earthquakes version info clicking the list icon in the top right corner will load the earthquake list.
Pdf documents opened from your browser may not display or print as intended. Expected ground motion can be calculated on the basis of probability, and the expected ground motions are referred to as seismic hazard. Through telework and other adaptations we continue to maintain our monitoring networks and analysis of the incoming data. Jump to navigation comcat documentation latest earthquakes. Seismic hazard and seismic risk in the united states earthquake hazard and emergency management 44 the main lecture material. The usgs has incorporated globalscale sets of seismic design parameter values into the tool. The usgs is committed to preserving these data on behalf of the academic community and the nation. Apr, 2016 teachers guide to the san francisco bay area geophysics maps u.
Compare 5 loans at once with loanspread loan comparison calculator and drill down into a loan summary of any of the 5 you choose. Instructional material complementing fema 451, design examples seismic hazard analysis 5a 1 seismic hazard analysis this topic addresses deterministic and probabilistic seismic hazard analysis, ground motion attenuation relationships, the u. Utility to calculate mineral and mineral aggregate moduli and density at specified temperatures and pressures. Finally, our calculations are compared with those of others e. Geological survey usgs national seismic hazard model project nshmp is responsible for developing. Geographic coordinates of these maxima and minima are also provided. Seismichazard maps for the conterminous united states usgs. Eqrm, which is actually short for earthquake risk model is a tool thats capable of earthquake scenario ground motion and scenario loss modeling. Interactive fault map and comprehensive geologically based information on known or suspected active faults and folds in the united states. Seismic hazard assessment for guam and the northern.
Aug 21, 2019 nicolas luco is a research structural engineer with the u. Seismic hazard curves and uniform hazard response spectra for the united state s a user guide to accompany open file report 01 436 a. The design code developers first decide how usgs earthquake hazard information should be applied in design practice. Leyendecker, nancy dickman, stanley hanson, and margaret hopper introduction new seismic hazard maps have been prepared by the u.
By default your browser will shake proportional to the earthquake magnitude. Seaoc oshpd do not intend that the use of this information replace the sound judgment of such competent professionals, having experience and knowledge in the field of practice, nor to substitute for the standard of care required of such professionals in interpreting and applying the results of the seismic data provided by this website. Earthquake catalogs compiled for the usgs national seismic. Seismic hazard, risk, and design for south america usgs. This means that there is more than a 20% chance of potentiallydamaging earthquake shaking in your project area in the next 50 years.
Additional period and site class maps for the 2014. Clicking the map icon in the top right corner will load the map. National seismic hazard mapping project nshmp legacy fortran code usgsnshmp hazfortran. Want to be notified of new releases in usgsnshmp haz. Seismic analysis, design, and installation of nscs pdf 24mb and testing database. Clicking the about icon in the top right corner loads this page. Usgs software to calculate ss, s1, sms, sm1, sds, sd1 based. Nehrp national earthquake hazards reduction program a. Information about seismic hazards in particular parts of the nation is available from regional earthquake consortia supported by fema. Using the usgs seismic risk web application to estimate. The usgs and its partners monitor and report earthquakes, assess earthquake.
The commaseparated values csv files below provide maximum and minimum ss, s1, and pga values for each of the 50 states plus washington, d. Seismic and wind force calculator cornell university. Geological survey for the conterminous united states. Then the usgs calculates gridded values of seismic design parameters based. Web application for calculating risk targeted ground motions and risk coefficients from hazard curves. Earthquake hazards program website open html 7 kb the united states geological survey usgs earthquake hazards program ehp is part of the national earthquake hazards reduction program nehrp led by the national instititute of standards and technology nist.
These codes include all necessary configuration and data files and were compiled and. National seismic hazard mapping project nshmp earthquake catalogs. The seismic hazard information is combined considering the potential for earthquakes on all seismic sources, and the level of ground shaking that would be caused by those earthquakes. National seismic hazard model defines the potential for earthquake ground shaking for various probability levels across the conterminous united states and is applied in seismic provisions of building codes, insurance rate structures, risk assessments, and other public policy. The input data includes a seismicity catalog, seismicity rate models, evaluation of earthquake sizes, fault geometry and rate parameters, and groundmotion models. The disconnect between the urban and national hazard models. All code verification is discussed in the documentation. Unified hazard tool please do not use this tool to obtain ground motion parameter values for the design code reference documents covered by the u.
Geological survey, 2010, earthquake hazards program. The usgs collaborates with organizations such as the building seismic safety council that develop model building and bridge design codes to make seismic design parameter values available to engineers. Usgs earthquake hazards software free download usgs. The 2015 edition is to be released in late 2015 or early 2016 and will be adopted by individual provinces and territories in the coming months. Opensha is an opensource, javabased platform for conducting. The national archive of marine seismic surveys namss is a marine seismic reflection data archive consisting of data acquired by or contributed to u. The damage potential of an earthquake is determined by how the ground moves and how the buildings within the affected region are constructed. These and other maps that depict earthquake hazard levels throughout the country are produced by the u. Photos, videos, and podcasts selected lists of earthquake damage, faults, and effects photos, videos, and podcasts. This repository houses the legacy codes used to generate the 2008 and 2014 updates to the nshm for the conterminous us. Elements of infrastructure and seismic hazard in the central united states. Clicking the options icon in the top right corner lets you change which earthquakes are displayed, and many other map and list options. Geological survey maps that show gravity and magnetic data in contour form superimposed on a landsat satellite image of the san francisco bay area.
The usgs requests that the earthquake hazard community bring to our attention new earthquake source and ground motion data or models that could be included in the national seismic hazard model nshm updates. Based on usgss 2014 national seismic hazard maps newupdated fault characterizations new ground motion prediction equations changes also resulting from fragility curve. Earthquake summary posters for significant earthquakes. Regional minimum and maximum seismic design map values. Enter general data city, importance factor, seismic data site class, seismic force resisting system, and wind data exposure category, plan and parapet dimensions, and coefficients for directionality and topography. Traveltimes vs distance are calculated for p and s arrivals sorry, no.
Calculate risktargeted ground motion parameter values in accordance with method 2 of 2010 asce 7 standard section 21. Alternatively, the instructor may wish to post the file electronically on the internet for the students to download. For best results viewing and printing pdf documents, it is recommended that you download the documents to your computer and open them with adobe reader. Unified hazard tool usgs earthquake hazard program. Geological survey and the swiss seismological service have released the first quantitative map of global seismic hazard. Realtime monitoring, station, and other various seismic data available for download. The mariana island arc has formed in response to northwestward subduction of the pacific plate beneath the philippine sea plate, and this process controls seismic activity in the region. Usgs software to calculate ss, s1, sms, sm1, sds, sd1 based on zip cod minorchord2000 structural 26 jun 08 17. Not only are we implementing these test cases, but we are doing so in way that anyone can set up and run these tests using our applications.
This web application can be used to calculate risktargeted ground motion values in accordance with method 2 of 2010 asce 7 standard section 21. Please do not use this tool to obtain ground motion parameter values for the design code reference documents covered by the u. In a paper submitted to seismological research letters related external resources, below, we describe a methodology. Geological survey gp1006 and gp1007 this publication openfile report 95479 is a teachers guide to two u. Seismic design of castinplace concrete diaphragms, chords, and collectors pdf 4mb second edition. We calculate seismic hazard, risk, and design criteria across south america using the latest data, models, and methods to support public officials, scientists, and engineers in earthquake risk mitigation efforts. Earthquake hazard map showing peak ground accelerations having a 2 percent probability of being exceeded in 50 years, for a firm rock site. The next update of the nshm for the conterminous u. Geological survey usgs engineering risk assessment project has developed the seismic risk web application to combine earthquake hazard and structural fragility information in order to calculate the risk of earthquake damage to structures. He serves as a liaison between the usgs national seismic hazard mapping project and the american society of civil engineers asce seismic subcommittees for the asce 7 and 41 standards, among other building code committees. Comcat documentation usgs earthquake hazards program.
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