Physical Sciences and Mathematics Commons^™

Seismicity In The Vicinity Of Yucca Mountain, Nevada, For The Period October 1, 2002 To September 30, 2003, Ken Smith, David Vin Seggern, John G. Anderson, Richard Quittmeyer, Amy J. Smiecinski

Publications (YM)

Earthquake activity in the Yucca Mountain from October 1, 2002 through September 30, 2003 (FY03) is assessed and compared with previous activity in the region. FY03 is the first reporting year since the 1992 M 5.6 Little Skull Mountain earthquake with no earthquakes greater than M 3.0 within 65 km of Yucca Mountain. In addition, FY03 includes the fewest number of earthquakes greater than M 2.0 in any reporting year since the LSM event. With 3075 earthquakes in the catalog, FY03 represents the second largest number of earthquakes (second to FY02) since FY96 when digital seismic network operations began. The …

Seismicity In The Vicinity Of Yucca Mountain, Nevada, For The Period October 1, 2003, To September 30, 2004, David Von Seggern, Ken Smith, John G. Anderson, Amy J. Smiecinski

Publications (YM)

This report describes the seismicity and earthquake monitoring activities within the Yucca Mountain region during fiscal year 2004 (FY2004 - October 1, 2003, through September 30, 2004) based on operation of the Southern Great Basin Digital Seismic Network (SGBDSN). Network practices and earthquake monitoring conducted at the Nevada Seismological Laboratory (NSL) under DOE directives for prior fiscal years are covered in similar yearly reports (see references). Real-time systems, including regional data telemetry and data management at NSL, provide for the automatic determination of earthquake locations and magnitudes and notification of important earthquakes in the region to UNR staff and DOE …

Extreme Ground Motion Studies, James N. Brune, John G. Anderson

Publications (YM)

Subtasks:

1. Constraints on Yucca Mountain extreme ground motion based on precariously balanced rocks, unstable precipitous cliffs, and un-fractured sandstone along the San Andreas fault.

2. Prepare summary report on large recorded ground motions.

Geodetic Monitoring Of The Yucca Mountain Region Using Continuous Gps Measurements, Geoff Blewitt, Jonathan Price, Nevada Geodetic Laboratory, Nevada Bureau Of Mines & Geology

Publications (YM)

What Task 3 is About: Monitor current crustal deformation at YM
– In the broader tectonic context of the NA-Pacific plate boundary
– In the regional context of the East California Shear Zone (ECSZ)
– In the geological context of specific fault activity
– Vertical motion associated with geophysical fluids

Using geodetic methods
– GPS – mature, proven
track the 3-D point-positions of 47 stations with < 1 mm precision
– InSAR – new, experimental
regional map of displacement along the line-of-sight (accuracy??)
proven capability: (1) co-seismic deformation; (2) local instabilities

Longbase Laser Strainmeter Measurements At Yucca Mountain, James N. Brune

Publications (YM)

Why Operate a Strainmeter? To monitor strain over a broader bandwidth and with much higher sensitivity than GPS (or other instruments):
– Measure strain from seismic, earth-tide, temperature and air pressure inputs--gives local rock properties, and changes in them.
– Independently constrains GPS results.

To directly measure in the Yucca Mountain Block:
– Sensitive to potential very local tectonic events, (including any triggered slip), or volcanic events.

To establish a baseline for future strain changes:
– E.g., events developing from loading and heating of the repository

Geostatistical And Stochastic Study Of Radionuclide Transport In The Unsaturated Zone At Yucca Mountain, Feng Pan, Ming Ye, Jianting Zhu

Publications (YM)

Motivation: Why Study of Unsaturated Zone?

The unsaturated zone (UZ), where the proposed repository would be located, acts as a critical natural barrier by delaying the arrival of radionuclides at the saturated zone and by reducing radionuclide concentrations in groundwater through dispersion and dilution

Quantitative prediction of radionuclide transport in the unsaturated zone becomes critical for performance assessment and design of the proposed repository of the Yucca Mountain Project