| New Search |
| Fault Name | State |
|---|---|
| Pojoaque fault | New Mexico |
| GEOMETRY | |
| Dip (degrees) | 60/40/50 |
| Dip direction | W |
| Sense of slip | normal |
| Rupture top (km) | 0 |
| Rupture bottom (km) | 15 |
| Rake (degrees) | -90 |
| Length (km) | 48 |
| MODEL VALUES | |
|---|---|
| Probability of activity | 1 |
| Minimum magnitude | 6.5 |
| Maximum magnitude | 7.03 |
| b-value | 0.8 |
| Assigned Dip | Fault-Parallel Slip Rate | Width | Annual Rate | a-value | Branch Weight |
|---|---|---|---|---|---|
| 40 | 0.03 | 23.3 | 2.66e-05 | 0.444 | 0.2 |
| 50 | 0.03 | 19.6 | 1.87e-05 | 0.291 | 0.6 |
| 60 | 0.02 | 17.3 | 1.47e-05 | 0.185 | 0.2 |
| Comments |
|---|
| The Pojoaque fault was assigned a vertical slip rate of 0.02 mm/yr in the 1996 and subsequent national seismic-hazard maps. There were and still are no fault-specific data from which to calculate slip rates. Wong and others (1995) considered that a 1-2 m scarp would persist for only 100,000-150,000 years in the dissected, highly erodible terrane of the area. Accordingly, they considered a vertical slip rate of 0.02 mm/yr to be the upper bound of a long-term, average rate. Dip of fault changed to 50? based on redefined regional default value (Lund, 2006). |
| Selected References |
|---|
| Wong, I., Kelson, K., Olig, S., Kolbe, T., Hemphill-Haley, M., Bott, J., Green, R., Kanakari, H., Sawyer, J., Silva, W., Stark, C., Haraden, C., Fenton, C., Unruh, J., Gardner, J., Reneau, S., and House, L., 1995, Seismic hazards evaluation of the Los Alamos National Laboratory: Technical report to Los Alamos National Laboratory, Los Alamos, New Mexico, February 24, 1995, 3 volumes, 12 pls., 16 appen. Lund, W.R., ed., 2006, Basin and Range Province Earthquake Working Group seismic-hazard recommendations to the U.S. Geological Survey National Seismic Hazard Mapping Program: Utah Geological Survey Open-File Report 477, 23 p, ugspub.nr.utah.gov/publications/open_file_reports/OFR-477.pdf. |