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Chance Findings About Early Holocene Tidal Marshes of Grays Harbor, Washington, in Relation to Rapidly Rising Seas and Great Subduction Earthquakes
| 题名： | Chance Findings About Early Holocene Tidal Marshes of Grays Harbor, Washington, in Relation to Rapidly Rising Seas and Great Subduction Earthquakes |
| 作者： | Phipps, J. B.; Hemphill-Haley, E.; Atwater, B. F. |
| 关键词： | Tidal marshes##Sea level rise##Earthquakes##Subjection zones##Tectonic plates##Water levels##Geology##Submergence##Stratigraphy##Turbidites##Borings##Grays Harbor (Washington)##Paleoecology##Marsh drowning## |
| 摘要： | Tidal marshes commonly build upward apace with gradual rise in the level of the sea. It is expected, however, that few tidal marshes will keep up with accelerated sea-level rise later in this century. Tidal marshes have been drowned, moreover, after subsiding during earthquakes. This report tells of ancient marshes that endured rapid sea-level rise in a region that subsides during earthquakes. The soils of these marshes were unexpectedly encountered in borings for a public-works project at Grays Harbor, Washington. The borings were logged quickly and only a few of the core sections were conserved. The limited findings pose puzzles about how the ancient marshes endured and what their history implies for earthquake hazards. |
| 总页数： | 46 |
| 报告类型： | 科技报告 |
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