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Alluvial Fans: Hazards and Management.
| 题名： | Alluvial Fans: Hazards and Management. |
| 关键词： | geomorphology, special flood hazard areas, hydrodynamic processes, floods, case studies, western united states |
| 摘要： | Flood hazards in the American West are often greatly underestimated due to the dry conditions, lack of rainfall and absence of defined watercourses. Ironically, western floods are quite severe and powerful, exhibiting unpredictable flow paths and high velocities that usually occur with little advance warning time. These floodscan cause considerable erosion in some areas while depositing large amounts of sediment and debris in others. With rapid growth continuing throughout the West (particularly in many major metropolitan areas) hillside building sites have become more popular as the supply of prime developable land becomes depleted. This has resulted in an increasing amount of development occurring in floodplain areas called alluvial fans. / Availability Note: Product reproduced from digital image. Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA. |
| 总页数： | u0814；17p |
| 报告类型： | 科技报告 |
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