| 广东省滑坡活动的时间分布规律研究 |
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| 引用本文： | 易顺民.广东省滑坡活动的时间分布规律研究[J].热带地理,2007,27(6):499-504. |
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| 作者姓名： | 易顺民 |
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| 作者单位： | 深圳市地质勘查局,广东,深圳,518023 |
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| 摘 要： | 系统分析了近20年来广东省的滑坡活动特征。结果表明,广东省滑坡活动的时间分布规律主要受降水变化和人类工程活动的制约;滑坡活动呈现与暴雨过程及工程建设活动相关的同发性和滞后性、日内活动的夜发性、继承老滑坡活动的重复性、突发性和隐蔽性等特征。从区域性滑坡活动的时间分布规律看,具有明显的不稳定周期性和随机性,降雨作用是影响滑坡活动年际时间分布规律的主要因素;从滑坡年内活动的时间分布特征看,具有明显的季节性,集中在每年6-9月的雨季发生;从日内发生的具体时间看,以傍晚及夜间发生居多。研究滑坡活动的时间分布规律,对滑坡预警预报工作有重要的科学意义。
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| 关 键 词： | 广东省 滑坡活动 时间分布规律 降水变化 人类工程活动 |
| 文章编号： | 1001-5221（2007）06-0499-06 |
| 修稿时间： | 2007-03-20 |
Temporal Distribution Regularity of landslide activities in Guangdong Province |
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| YI Shun-min.Temporal Distribution Regularity of landslide activities in Guangdong Province[J].Tropical Geography,2007,27(6):499-504. |
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| Authors: | YI Shun-min |
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| Institution: | Geological Survey Bureau of Shenzhen City, Shenzhen 518023, China |
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| Abstract: | With the data of the past 20 years,the characteristics of landslides activities in Guangdong Province are discussed.It is shown that: temporal distribution regularity of landslides depended on the change of precipitation and human project activities;landslide occurrence was characterized by simultaneity and hysteresis in correlation to the heavy rainstorm and the project construction,repeatability following the past landslide activities,night-occurrence,paroxysm and concealment features;temporal distribution regularity of regional landslides had obvious characteristics of unstable periodicity and randomicity,and rainfall was a main factor to influence the interannual distribution of landslides;landslides within a year had obvious concentricity with seasons,mainly focusing on the period from June to September;the occurrence time within a day was mainly in the nightfall and at night.It is argued that the analysis on temporal-distribution regularity of landslides wound be of scientific significance for early-warning and forecast of the disasters. |
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| Keywords: | Guangdong Province landslide activity time-distribution regularity change in precipitation human engineering activity |
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