Areas with Surface Thermal Anomalies as Detected by ASTER and LANDSAT Data around Pinkerton Hot Springs, Colorado

This map shows areas of anomalous surface temperature in northern Saguache Counties identified from ASTER and LANDSAT thermal data and spatial based insolation model. The temperature for the ASTER data was 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 having anomalous temperature in the ASTER data are shown in blue diagonal hatch, while areas having anomalous temperature in the LANDSAT data are shown in magenta on the map. Thermal springs and areas with favorable geochemistry are also shown. Springs or wells having non-favorable geochemistry are shown as blue dots.

本图展示了利用 ASTER 和 LANDSAT 热数据以及基于空间辐射模型识别出的萨瓜奇县北部异常地表温度区域。ASTER 数据的温度计算采用发射率归一化算法，以分离温度与发射率。入射太阳辐射的计算基于由 Fu 和 Rich (1999) 开发的空间辐射模型。随后，通过从 ASTER 数据中提取的发射率计算了由于太阳辐射引起的温度。残余温度，即从 ASTER 温度中减去太阳辐射引起的温度，被用于识别温度异常区域。在 ASTER 数据中具有异常温度的区域以蓝色斜杠阴影表示，而在 LANDSAT 数据中具有异常温度的区域则以洋红色在地图上显示。温泉及具有优越地球化学特性的区域亦被标注。具有不适宜地球化学特性的温泉或井则以蓝色圆点表示。