...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of hydrometeorology >Global distribution of extreme precipitation and high-impact landslides in 2010 relative to previous years
【24h】

Global distribution of extreme precipitation and high-impact landslides in 2010 relative to previous years

机译：与往年相比，2010年全球极端降水和高影响滑坡的分布

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

It is well known that extreme or prolonged rainfall is the dominant trigger of landslides worldwide. While research has evaluated the spatiotemporal distribution of extreme rainfall and landslides at local or regional scales using in situ data, few studies have mapped rainfall-triggered landslide distribution globally because of the dearth of landslide data and consistent precipitation information. This study uses a newly developed global landslide catalog(GLC) and a 13-yr satellite-based precipitation record from Tropical Rainfall Measuring Mission(TRMM) data. For the first time, these two unique products provide the foundation to quantitatively evaluate the co-occurrence of precipitation and rainfall-triggered landslides globally. Evaluation of the GLC indicates that 2010 had a large number of high-impact landslide events relative to previous years. This study considers how variations in extreme and prolonged satellite-based rainfall are related to the distribution of landslides over the same time scales for three active landslide areas: Central America, the Himalayan arc, and central eastern China. Several test statistics confirm that TRMM rainfall generally scales with the observed increase in landslide reports and fatal events for 2010 and previous years over each region. These findings suggest that the co-occurrence of satellite precipitation and landslide reports may serve as a valuable indicator for characterizing the spatiotemporal distribution of landslide-prone areas in order to establish a global rainfall-triggered landslide climatology. This study characterizes the variability of satellite precipitation data and reported landslide activity at the global scale in order to improve landslide cataloging and attempt to quantify landslide triggering at daily, monthly, and yearly time scales.
机译：众所周知，极端或长时间的降雨是全球滑坡的主要诱因。虽然研究使用原位数据评估了局部或区域范围内极端降雨和滑坡的时空分布，但由于缺乏滑坡数据和一致的降雨信息，很少有研究绘制全球降雨触发的滑坡分布图。这项研究使用了新开发的全球滑坡目录（GLC）和来自热带雨量测量任务（TRMM）数据的13年基于卫星的降水记录。这两个独特的产品首次为定量评估全球降水和降雨触发的滑坡的同时发生提供了基础。 GLC的评估表明，与往年相比，2010年发生了大量高影响力的滑坡事件。这项研究考虑了三个活跃滑坡地区（中美洲，喜马拉雅弧线和中国中部东部）在相同时间尺度上极端和长时间卫星降水的变化与滑坡的分布有何关系。多项测试统计数据证实，TRMM降雨总体上随每个地区2010年及往年滑坡报告和致命事件的增加而扩大。这些发现表明，卫星降水和滑坡报告的共存可能是表征滑坡易发地区时空分布特征的宝贵指标，以建立全球降雨触发的滑坡气候学。这项研究表征了全球范围内卫星降水数据和报道的滑坡活动的变异性，以改善滑坡分类，并试图量化在每天，每月和每年的时间尺度上触发滑坡的数量。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号