![]() ![]() ![]() 3.3 on Tuesday, at 3:45 pm (GMT -7) – 13 mi NE of Soledad, Monterey County, California, USA 2.9 on Sunday, at 2:49 am (GMT -7) – 8.3 mi E of Watsonville, Santa Cruz County, California, USA See all quakes in the past 24 hours! Strongest quake: Mag. Story by Kathryn Hansen.There were 19 small quakes between magnitudes 1.0 and in or near Lake Nacimiento in the past 48 hours. NASA Earth Observatory images by Lauren Dauphin, using Landsat data from the U.S. “The two effects together mean that the lake will disappear over time.” Also, sediments that have eroded from the hills and channels are filling the lake. The map shows dramatic subsidence (up to 21 feet) in the northwestern part of Hebgen Lake, with subsidence decreasing southward away from the two primary faults (Hebgen and Red Canyon) that ruptured in 1959. “This is the best-case scenario for this type of situation, releasing the water slowly and progressively with time,” Petley said. In the vicinity of this particular lake, erosion of the earthen dam is slowly lowering the lake level. The whole way that the environment is operating has changed.” It is not just that buildings and infrastructure are damaged. “This is the frequently forgotten effect of an earthquake. “The people have to deal with these effects, and they are profound and dangerous,” Petley said. And huge amounts of sediment were mobilized. The earthquake caused the kinds of changes to slopes and channels that can last for years or decades, according to Dave Petley of the University of Sheffield. These images were acquired before the start of the rainy season, so the image sequence likely represents the longer-term effects of an earthquake on the landscape. Water levels can fluctuate over the course of a year, especially after large rainfall events. ![]() Closest Towns: West Yellowstone, MT: Recreation Map. Hebgen Lake covers the central part of the district. The second image shows the same area on April 2, 2018, after water levels have lowered. The Hebgen Lake district encompasses the soutwest portion of Custer Gallatin National Forest stretching down the west boundary of Yellowstone National Park. The first image shows the lake on April 28, 2016, when water levels were still relatively high. The change is visible in this image pair, acquired with the Operational Land Imager (OLI) on Landsat 8. Ten years later, the lake’s water level has dropped. The earthen dams caused water levels to rise and spawned more than 20 “quake lakes.” A series of satellite images published in 2008 showed the growth of one such lake in Beichuan County, one of the most severely affected quake regions. Earthquake damage to the Coalinga oil fields P 1487 - Earthquake - induced landslides, Mammoth Lakes area, California OP - 50 - Effects of the earthquake. The quake triggered deadly landslides, some of which blocked the flow of rivers. On that day, a magnitude 7.9 temblor-known as the Great Sichuan or Wenchuan earthquake-caused destruction to areas near and far from the epicenter, about 80 kilometers west-northwest of Chengdu. On May 12, 2008, the mountainous landscape of south-central China was profoundly changed. ![]()
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