Mass transport on the continental slope of Israel |
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Authors: | Gideon Almagor |
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Institution: | (1) Geological Survey of Israel, 30, Malkhei Yisrael Street, 95501 Jerusalem, Israel |
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Abstract: | Seismic profiles, radiographs, and geotechnical tests made on cores show that large sediment masses on the slope frequently
slump downslope. This slumping is earthquake-triggered. Off central and northern Israel (average maximum gradients 5 to 8°),
this slumping does not allow continuous sediment accumulation. Sediment accumulation and deposition of the debris over the
lower slope steadily keeps the slope in a smooth state. Only strong quakes affect the more stable, moderate slope (average
maximum gradients 3–4°) off southern Israel. These quakes affect the central and northern slope as do the weaker quakes, but
cause slumping of large sediment slabs that heavily scars the southern slope. |
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