A major difference between the types of landslides is their depth and the amount of water they contain. Steve Bloom/The Olympian via AP The addition of water increases weight and reduces friction. For more information, watch a video about USGS landslide science, and visit the USGS Landslide Hazards Program website. The USGS also worked with partners to obtain and study soil samples from the landslide area to better understand the landslides characteristics and behavior. Governors/Officers/Directors/Members/Managers, FAQ - Administration Dissolution/Termination, Election Cost Allocation and Reimbursement. A 1997 slide on Perkins Lane in the Magnolia neighborhood sent houses tumbling to the beach. There are steps that can be taken to live more securely with our states landslide risk, DNR advises. The inventory is given to decision-makers in the state, which helps them make informed planning decisions. The goal of USGS landslide science is to help answer questions such as where, when, and how often landslides occur and how fast and far they might move. Over the past year, scientists have acquired new insight into the circumstances surrounding the Oso slide. The same is true for landslidesfor the same kind of material, steeper slopes have less friction, making landslides more common. That there even is such a guide should be taken as fair warning: We all live in and around landslide country. Studies indicate that slope failure occurred in two stages over the course of about 1 minute. Changes in water well levels or water wells that suddenly run dry. IE 11 is not supported. Seek out advisories and warnings during and after intense rainfall events. Learn more about Washington state projects. Another slide on. With heavy snow continuing in Washington's mountains, the . A volcanic eruption can rapidly melt snow and ice, causing a deluge of rock, soil, ash, and water that accelerates down the slopes of a volcano, devastating anything in its path. A landslide is blocking the roadway in the 2200 block of Maple Valley Highway in Renton. There is no specified time for reopening. These slides typically move slowly over decades, even centuries. Steeper slopes have a greater proportion of downhill force. Areas above or below steep slopes, or in areas known to have frequent landslides, are more likely to experience landslides in the future. Looking at the DNR's map, residents can see even urban areas have experienced landslides in the past, including parts of West Seattle above Alki Beach, areas of Seattle's Beacon Hill that run.

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