Surface Temperature Anomalies Derived from Night Time ASTER Data Corrected for Solar and Topographic Effects, Routt County, Colorado

This map shows areas of anomalous surface temperature in Alamosa and Saguache Counties identified from ASTER thermal data and spatial based insolation model. The temperature is calculated using the Emissivity Normalization Algorithm that separate temperature from emissivity. The incoming solar radiation was calculated using spatial based insolation model developed by Fu and Rich (1999). Then the temperature due to solar radiation was calculated using emissivity derived from ASTER data. The residual temperature, i.e. temperature due to solar radiation subtracted from ASTER temperature was used to identify thermally anomalous areas. Areas that had temperature greater than 2o were considered ASTER modeled "very warm modeled surface temperature" are shown in red on the map. Areas that had temperatures between 1o and 2o were considered ASTER modeled"warm modeled surface temperature" are shown in yellow on the map.

This map also includes the locations of shallow temperature survey points, locations of springs or wells with favorable geochemistry, faults, transmission lines, and areas of modeled basement weakness "fairways."

Note: 'o' is used in this description to represent lowercase sigma.

本图展示了由 ASTER 热数据及基于空间分布的日照模型识别出的阿拉莫萨县和萨瓜奇县的异常地表温度区域。温度计算采用发射率归一化算法，以区分温度与发射率。入射太阳辐射的计算基于由傅（Fu）和里奇（Rich）（1999年）开发的基于空间分布的日照模型。随后，利用从 ASTER 数据中提取的发射率，计算了由太阳辐射引起的温度。残差温度，即从 ASTER 温度中减去太阳辐射引起的温度，被用于识别热异常区域。地图上用红色标示的温度高于 2 摄氏度的区域被视为 ASTER 模型所模拟的“非常温暖的地表温度”。温度介于 1 摄氏度至 2 摄氏度之间的区域被视为 ASTER 模型所模拟的“温暖地表温度”，在地图上以黄色表示。此外，该图还标注了浅层温度调查点的位置、具有优越地球化学特性的泉或井的位置、断层、输电线路以及模拟的基底薄弱区“航道”。注：本描述中‘o’用于表示小写希腊字母sigma。