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Earthquake Response Responsibilities and Functions. California Geological Survey. Jerry Treiman Senior Engineering Geologist California Geological Survey. California Geological Survey Earthquake Response. 1. Provide information and support to CalEMA

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California geological survey

Earthquake Response

Responsibilities and Functions

California Geological Survey

Jerry Treiman

Senior Engineering Geologist

California Geological Survey


California geological survey earthquake response
California Geological SurveyEarthquake Response

1. Provide information and support to CalEMA

2. Evaluate extent and severity of surface fault rupture

3. Evaluate extent and severity of ground failure

4. Collect Strong Motion Data

5. Monitor tsunami effects


California geological survey earthquake response1
California Geological SurveyEarthquake Response

  • Establish Clearinghouse

  • identify hazards – document data

    • Facilitate overflights

    • Facilitate access

    • Collect and share data

    • Help coordinate field efforts

      • Disseminate critical information to responders and decision makers

    • [observe structural damage (with EERI)]

  • Clearinghouse does not direct or control activities

1994

Northridge Earthquake

Clearinghouse


California geological survey earthquake response2
California Geological SurveyEarthquake Response

  • 2. Map Fault Rupture for State APEFZ Program

    • Document breadth and complexity of faulting

    • Observe fault-related deformation

    • Assess adequacy of existing zones

    • Recommend zone revisions

courtesy T. Rockwell courtesy T. Rockwell photo by K. Clahan


California geological survey earthquake response3
California Geological SurveyEarthquake Response

  • 3. Identify Ground Failure

  • Landslides, liquefaction & lateral spread

  • Be alert to imminent threats to facilities and infrastructure

  • Learn from observed failures

  • Goal is to be able to make better hazard maps

2010

photo by H. Stenner

2010

2010

1994

photo by H. Stenner photo by T. McCrink photo courtesy P. Irvine


California geological survey earthquake response4
California Geological SurveyEarthquake Response

  • 4. Strong Motion Instrumentation Program

  • Manages a network of accelerographs throughout the State (free field, hi-rise bldgs, dams, bridges)

  • Collaborates with CISN to produce Shake Map

  • Obtains records for buildings duringearthquake

  • Rapid dissemination of data through CESMD

  • Data to help improve codes and design


California geological survey earthquake response5
California Geological SurveyEarthquake Response

5. Tsunami Response

To evaluate adequacy of present maps and improve

hazard assessment.


California geological survey southern san andreas earthquake response
California Geological SurveySouthern San Andreas Earthquake Response


California geological survey southern san andreas earthquake response1
California Geological SurveySouthern San Andreas Earthquake Response

Coordination

USGS

SCEC

Others


California geological survey southern san andreas earthquake response2
California Geological SurveySouthern San Andreas Earthquake Response

  • CGS goals –

  • Gather data with respect to the distribution

  • and magnitude of rupture and ground failure

  • Identify imminent hazards

  • Pass critical information to responders and

  • decision makers.

  • Maintain close contact with Clearinghouse and

  • other sites to ensure critical issues are covered


California geological survey southern san andreas earthquake response3
California Geological SurveySouthern San Andreas Earthquake Response

Needs that we are concerned about -

  • Overflights and other means to assess scope of event

  • Coordination of field efforts with others

  • Multiple field “camps” - one won’t be enough

  • Communication critical

  • Coordinate efforts for efficiency and completeness

  • Share information and timely observations

  • Coordinate info with SCEC response site and others


California geological survey southern san andreas earthquake response4
California Geological SurveySouthern San Andreas Earthquake Response

Lancaster

San Bernardino

Indio

Credit: Rob Graves (URS) Brad Aagaard & Ned Field, (USGS); Nitin Gupta


California geological survey earthquake response6
California Geological SurveyEarthquake Response

  • Outstanding Issues:

  • Pre-selection of field rendezvous sites to share

  • information and resources

  • Data communication and coordination

  • Staffing needs to get the work done

  • Aerial photography/remote imagery

  • Data collection standards/consistency

  • (forms; common datum)

  • Maps/GIS needs



California geological survey earthquake response7
California Geological SurveyEarthquake Response


Jerry Treiman

Senior Engineering Geologist

California Geological Survey


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