************************************************************* Basin and Range Province Seismic Hazards Summit Evaluating Approaches, Techniques, and Policies for Seismic Hazard Characterization in Extensional Regions A conference to be held at the Silver Legacy Hotel Reno, Nevada May 13-15, 1997 Sponsored by: Western States Seismic Policy Council Federal Emergency Management Agency United States Geological Survey and Geoscientists from: Arizona, California, Colorado, Idaho, Montana, Nevada, New Mexico, Oregon, Utah, Wyoming **************************************************************** SUMMARY OF PROGRAM The Basin and Range province of North America is a land of contrasts and challenges for seismic hazard analysis and application. Seismogenic faults within the province are generally intraplate in character, with earthquake recurrence intervals on the order of thousands to hundreds of thousands of years. This may make the hazard sound remote, but there are literally thousands of potentially active faults, many of which are not detected or well represented at the surface. Further, earthquakes al ong many, if not all, of these faults seem to cluster in time and space, complicating the analysis of earthquake occurrence. Earthquake magnitudes for these structures are generally estimated to be from magnitude 6 to 8. Most people at risk from these potential earthquakes live in cities. Policies for seismic hazards in the Basin and Range province are largely based on those from other tectonic provinces, such as the San Andreas plate boundary system. This meeting is bringing together ten state geological surveys and state emergency management agencies, the USGS, FEMA, and some of the best minds in contemporary science and engineering geology to discuss seismic hazard analysis in the Basin and Range province. In addition, fundamental users of seismic hazard analyses will discuss the uses and needs of this information. A comprehensive view of the state-of-practice will be available with which to judge the most reasonable and logical approaches for seismic hazard analysis within the province and to highlight outstanding problems. Quaternary fault and seismicity maps from each of the ten participating states will be available to use as a backdrop for neotectonic, seismic hazard, and policy discussions. The format of the summit will be a sequence of summary talks given on specific topics relevant to seismic hazard information usage in the Basin and Range province. Follow-up will include panel discussions and interactive audience participation. More specific seismic hazard analyses or topics will be presented in a conference-long poster session. We encourage wide participation by all interested scientists, engineers, emergency managers, and policy makers to help gain as many ideas and viewpoints as possible. Conference sessions will include: seismic hazard analysis, earthquake geology, seismology, users perspectives, and policies for usage of seismic hazard information. The conference will include panel and general discussions, poster sessions, and an abstracts with program volume (20-minute talks, 1-page-maximum abstracts). Emphasis will be given to seismic hazards in the Basin and Range province, problems encountered, solutions employed, and policies adopted. A proceedings volume will be produced to capture the presentations and findings of the summit. Some Topics Relevant to the Seismic Hazard Summit: Active fault definition and criteria in the Basin and Range province Clustered earthquake behavior in time and space Long recurrence intervals for major earthquakes vs short timeframes of probabilistic analysis Distinct basin effects on ground motion Neotectonics of the Basin Range province Estimating values for seismic hazard analysis Use of seismic hazard information in the Basin and Range province Any topics related to seismic hazards analysis in extensional areas are encouraged. ************* HOTEL RESERVATIONS: A block of rooms is available$57 per night (tax included) for participants. For reservations call the Silver Legacy Hotel at 1-800-687-7733 and ask for the Western States Seismic Policy Council's rates. *******REGISTRATION FORM********* Please complete the following information, enclose conference fee(s), and mail to: Western States Seismic Policy Council 121 2nd Street, 4th Floor San Francisco, CA 94105 You may also fax or e-mail to reserve space or to register by credit card (VISA or MasterCard only). fax: 415-974-1747 e-mail: wsspc@wsspc.org If you have any questions, please call 415-974-6435. NAME: JOB TITLE: ORGANIZATION: ADDRESS: CITY, STATE, ZIP: TELEPHONE: ( ) FAX: ( ) E-MAIL: PROFESSIONAL EMPHASIS (Emergency Management, Geoscience, etc.): NAME OF SPOUSE/GUEST(S) (if attending): Do you have any dietary restrictions (e.g., Vegetarian): yes / no If yes, please explain: Cancellation Policy: All cancellations must be received in writing and are subject to a $30 per person handling fee. REGISTRATION If postmarked On or Before April 1 Registrant $165 Spouse/Guest $65 (includes meals and socials) Student $90 After April 1 Registrant $195 Spouse/Guest $85 (includes meals and socials) Student $120 The registration fee includes 3 breakfasts, 2 lunches, coffee breaks, evening socials, and a copy of the conference proceedings. PAYMENT BY: Check (payable to WSSPC) State Voucher (payable to WSSPC) Credit Card - please list the following: Expiration Date: / Card Number: Name on Card: Type (circle one) VISA or MasterCard ******************************************************************* Basin & Range Province Seismic Hazards Summit Preliminary Schedule (3/21/97) Monday, May 12, 1997 4:00 - 6:00 Registration 5:00 - 6:00 Put up Posters/Displays (Posters are displayed all three days) 6:00 - 8:00 Icebreaker - Posters Tuesday, May 13, 1997 7:00 - 8:00 Breakfast 8:15 - 8:30 Conference Opening Perspectives and User Needs 8:30 - 9:00 Challenges of Characterizing Seismic Hazards in the Basin and Range Province Clarence Allen 9:00 - 9:30 ICBO/NEHRP Provision Needs 9:30 - 10:00 Engineering/Infrastructure Needs Jim Gates 10:00 - 10:30 Insurance Industry Needs Ron Eguchi 10:30 - 11:00 BREAK 11:00 - 11:30 Emergency Manager Needs Stephen Weiser 11:30 - Noon HAZUS Needs Noon - 1:15 LUNCH Active Fault Characterization 1:15 - 1:45 Surface Faulting Hazards in Utah Gary Christenson 1:45 - 2:15 130,000 vs 10,000 Classification for Active Faults Craig dePolo 2:15 - 2:45 Use of Fault Activity Criterion Ron Lynn 2:45 - 3:15 BREAK Earthquake Occurrence Along Faults 3:15 - 3:45 Contrast Between Short and Long-Term Records in the Rio Grande Rift Michael Machette 3:45 - 4:15 Earthquake Recurrence in Intraplate Settings David Schwartz 4:15 - 5:15 Discussion 5:15 - 6:00 Panel Discussion 6:00 - Reception and Posters Wednesday , May 14, 1997 7:00 - 8:00 Breakfast 8:00 - 8:15 Day's Overview Strong Ground Motion Characterization 8:15 - 8:45 Ground Motion Attenuation in Extensional Environments Paul Spudich 8:45 - 9:15 Yucca Mountain Ground Motion Panel Norm Abrahamson 9:15 - 9:45 Analysis of Ground Motion Data, 1995 Dinar Earthquake. Mustafa Erdik 9:45 - 10:15 BREAK 10:15 - 10:45 Directivity Effects And Special Pulses Along Normal Faults Paul Somerville 10:45 - 11:15 Strong Motion Expected From Large Normal Faults James Brune 11:15 - 11:45 Attenuation and Site Effects, S. & W. Nevada Ken Smith 11:45 - 1:15 LUNCH Basin Effects on Ground Motion 1:15 - 1:45 Basin Effects on Ground Motion Gerard T. Schuster 1:45 - 2:15 Site Effects - Especially From Las Vegas Feng Su 2:15 - 2:45 Characterizing Basin Effects Jacobo Bielak 2:45 - 3:15 BREAK 3:15 - 4:30 Discussion 4:30 - 5:30 Panel Discussion DINNER (on your own) 7:30 - 9:00 Earthquake Clearinghouse Discussion Jonathan Price Thursday, May 15, 1997 8:00 - 8:15 Day's Overview Probabilistic Seismic Hazard Analysis 8:15 - 8:45 Earthquake Data Base Issues for Seismic Hazard Analysis Walter Arabasz 8:45 - 9:15 Quaternary Fault Data and the 1996 National Seismic Hazard Maps Ted Barnhard 9:15 - 9:45 Geodetic Input to Probable Seismic Hazard Analysis Robert Smith 9:45 - 10:15 BREAK 10:15 - 10:45 Earthquake Recurrence Models Steven Wesnousky 10:15 - 11:15 1996 National Seismic Hazard Maps Art Frankel 11:15 - 11:45 Seismic Hazards in the Basin and Range province :Perspectives From Probabilistic Analyses Ivan Wong 11:45 - 1:00 LUNCH (on own) 1:00 - 1:30 Natural Limits on PSHAs John Anderson 1:30 - 2:00 Sensitivities of probabilistic Seismic Hazard Analyses to Earthquake recurrence along faults in the Basin and Range Province David Perkins 2:00 - 2:30 Perspectives on PSHAs 2:30 - 3:00 BREAK 3:00 - 5:00 Discussion/Panel Discussion 5:00 - 5:30 Review of Conference and Adjourn 7:30 - 9:00 Basin and Range Committee of the Western States Seismic Policy Council Meeting