In other words... it had happened in that area many times before, including one slide much larger than the Oso Slide.
On Mon, Mar 31, 2014 at 2:40 PM, Lin Kerns <linkerns@gmail.com> wrote:
To download the report, click the title link below:
USGS Preliminary Report Shows Ancient Landslides Near Oso
March 30, 2014 | USGS
“High-resolution topographic surveys allow fairly precise mapping of landslide deposits and their relative ages. [...] The Tulalip Tribes, in partnership with the Puget Sound Lidar Consortium, acquired a high-resolution lidar survey of the North Fork Stillaguamish River valley in 2013. This report presents a preliminary interpretation of the topography of this area using the lidar data at a scale of 1:24,000.” Quoted from the USGS Preliminary Interpretation.
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