1999 Hector Mine Earthquake
Arial Photos of the Surface Rupture (1 of 2)
Click on an entry below to view the full-size photo.
Paul "Kip" Otis-Diehl, USMC, 29 Palms (1999)
Looking towards NW across Lavic Lake, rupture passing from lower right, stepping out toward upper left; NW end of the surface rupture is in the distance on the far side of Lavic Lake.
*This photo may be used freely with a credit to the photographer.
Paul "Kip" Otis-Diehl, USMC, 29 Palms (1999)
Cracks on far side of wash; called 'en-echelon' breaks where they step sideways.
*This photo may be used freely with a credit to the photographer.
Paul "Kip" Otis-Diehl, USMC, 29 Palms (1999)
Splaying of fractures viewed from above.
*This photo may be used freely with a credit to the photographer.
Paul "Kip" Otis-Diehl, USMC, 29 Palms (1999)
Southeast of maximum displacement site. Here we see 3-4 meters of right-lateral slip have offset a ridge and created a 'shutter' ridge blocking flow in the dry creek channel. The white vertical surface is the fault scarp.
*This photo may be used freely with a credit to the photographer.
Paul "Kip" Otis-Diehl, USMC, 29 Palms (1999)
Fractures crossing a wash.
*This photo may be used freely with a credit to the photographer.
Paul "Kip" Otis-Diehl, USMC, 29 Palms (1999)
View right along the main rupture zone, and also visible is a subsidiary fracture from lower-right corner coalescing with the main break in the middle distance.
*This photo may be used freely with a credit to the photographer.
Paul "Kip" Otis-Diehl, USMC, 29 Palms (1999)
View downward onto vehicle tracks crossing the fault at a high angle. One can see 2.5 to 3.5 meeter right-lateral displacement of the tracks.
*This photo may be used freely with a credit to the photographer.
Paul "Kip" Otis-Diehl, USMC, 29 Palms (1999)
Fracture running along hillside in low-relief topography with offset gullies and tracks.
*This photo may be used freely with a credit to the photographer.
Paul "Kip" Otis-Diehl, USMC, 29 Palms (1999)
Ground view along surface rupture, showing the fracturing of the soil and how pieces have been pushed up within the fault zone.
*This photo may be used freely with a credit to the photographer.
Paul "Kip" Otis-Diehl, USMC, 29 Palms (1999)
Subparallel breaks coalesce on face of hill (in shadow) and form a single rupture heading off to the upper left.
*This photo may be used freely with a credit to the photographer.
Paul "Kip" Otis-Diehl, USMC, 29 Palms (1999)
Downward view onto gullies, gravel bar, and other laterally offset features. Here slip appears to be about 2 meters.
*This photo may be used freely with a credit to the photographer.
Paul "Kip" Otis-Diehl, USMC, 29 Palms (1999)
Rupture cutting across the countryside in loose alluvium
*This photo may be used freely with a credit to the photographer.
Paul "Kip" Otis-Diehl, USMC, 29 Palms (1999)
Breaks cutting alluvium, nicely lit.
*This photo may be used freely with a credit to the photographer.
Paul "Kip" Otis-Diehl, USMC, 29 Palms (1999)
View downward onto site with maximum observed lateral displacement along the Lavic Lake fault. Here a vehicle track and dry creek bed are laterally offset by approx. 370-480 centimeters. The orientation of fractures here is nearly North-South. Compression locally across the fault pushed up a 'mole track' where the fault breaks the dirt road at the right side of the photo
*This photo may be used freely with a credit to the photographer.
Paul "Kip" Otis-Diehl, USMC, 29 Palms (1999)
Fracture cutting across the countryside
*This photo may be used freely with a credit to the photographer.
Paul "Kip" Otis-Diehl, USMC, 29 Palms (1999)
Fracture cutting across the countryside (left to right) such that the fault scarp is lit up by the sun, appearing as a bold white line.
*This photo may be used freely with a credit to the photographer.
Paul "Kip" Otis-Diehl, USMC, 29 Palms (1999)
'Mole track' at the max. slip site from the ground.
*This photo may be used freely with a credit to the photographer.
Paul "Kip" Otis-Diehl, USMC, 29 Palms (1999)
View towards south across Lavic Lake, with the surface rupture running from lower right to upper left. In the middle distance on the right is an ancient lava flow.
*This photo may be used freely with a credit to the photographer.
Paul "Kip" Otis-Diehl, USMC, 29 Palms (1999)
Splayed fractures running through loose alluvium.
*This photo may be used freely with a credit to the photographer.
Paul "Kip" Otis-Diehl, USMC, 29 Palms (1999)
'Apparent' vertical displacement and scarps caused by mainly lateral slip.
*This photo may be used freely with a credit to the photographer.
