用于地表温度场与断裂构造关系分析的分段均值法--以江山-绍兴断裂金衢段为例

Subsection Mean Method for Relation Analysis of the Land Surface Temperature Field and the Fault:A Case Study of the Jiangshan-Shaoxing Fault Between Jinhua and Quzhou of Zhejiang Province

提出了一种用于地表温度场与断裂构造关系分析的分段均值法。方法以已知断裂带中心线为准,向两侧一定范围作等间距划分,统计各等分带内的平均地表温度和平均距离,通过绘制平均地表温度与平均距离之间的相关性曲线来描述地表温度场与断裂构造之间的关系。在江山-绍兴断裂金衢段的实际应用中,方法以Landsat7ETM+热红外遥感影像为数据源,描述了研究区地表温度场与深大断裂带之间的关系。认为地表温度场与北东走向的江山-绍兴断裂带、常山-漓渚断裂带和球川-萧山断裂带的相关性明显,区域特征稳定。在各断裂带影响范围内,距离断裂带越近,地表温度越高;北西走向的淳安-温州断裂带和东西走向的衢州-天台断裂带均处于地表温度梯度变化带,断裂带两侧可能分属不同的地表温度场。

A Subsection Mean Method （SMM） for relation analysis of land surface temperature field （LSTF） and the faults is proposed. The method assumes that the center of fault zone is known. According to the distance from the fault zone, a certain region is equally partitioned. Average LST and distance in each equally-didivded zone are calculated, and then the data are plotted in the correlation diagram of the mean LST verse the mean distance. In the case study of Jiangshan-Shaoxing fault between Jinhua and Quzhou of Zhejiang Province, this paper describes the relations between LSTF and deep large faults based on the images of the Landsat 7 ETM and thermal infrared remote sense. The results indicate that LSTF is distinctly related to the Jiangshan-Shaoxing fault, Changshan-Lizhu fault and Qiuchuan-Xiaoshan fault and regionally, shows a stable change feature. Within the area effected by each fault, the closer the distance to the fault, the higher is the LST; The NW-trending Chun＇an-Wenzhou fault and the EW-trending Quzhou- Tiantai fault are situated in the transitional zone of LST, while areas on both sides of the two faults may belong to different LSFTs.