Remote sensing tools have proven to be effective for direct detection of petroleum hydrocarbons (PHC) in continental areas. PHC yield diagnostic absorption features in the near, shortwave, midwave, and thermal infrared (NIR-SWIR-MWIR-TIR) ranges. Thus far, the NIR-SWIR range has been primarily exploited for remote sensing PHC detection, whereas the application of MWIR and TIR data has remained underexplored. In this work, we aim to close this gap by using the Spatially-Enhanced Broadband Array Spectrograph System (SEBASS) (7.6–13.5 μm) to map PHC-impregnated soil substrates. A laboratory experiment was performed to identify the features in pure crude oil samples, in dry/wet mineral substrates, and in their physical mixtures using attenuated total reflectance (ATR) and directional-hemispherical reflectance (DHR) measurements. A similar setting was designed in an open environment and imaged by the SEBASS sensor. Close-range spectroscopy indicated that PHC features between 7 and 15 μm are subtle in comparison to the features of the mineral substrates, thus hindering direct identification of the PHC spectrally. However, the PHC coating of the grains increased the emissivity of the background features - a finding that was supported by SEBASS data processing using a matched filtering technique. The SEBASS data indicated that besides an increase in the emissivity of the underlying substrates, the presence of PHC also induces a change in the temperature of the contaminated targets. The combination of these two factors highlighted the contaminated sites indirectly. Since the mapping of clean, moist and PHC contaminated sites with TIR data depends on variations in the emissivity and temperature of the targets, the application can be extended to orbital sensors with lower spectral resolution (such as ASTER and ECOSTRESS), enabling the monitoring of larger areas.

事实证明，遥感工具可有效地直接检测大陆地区的石油碳氢化合物（PHC）。PHC可在近，短波，中波和热红外（NIR-SWIR-MWIR-TIR）范围内产生诊断吸收特征。迄今为止，NIR-SWIR范围主要用于遥感PHC检测，而MWIR和TIR数据的应用仍未得到充分开发。在这项工作中，我们旨在通过使用空间增强宽带阵列光谱仪系统（SEBASS）（7.6–13.5μm）绘制PHC浸渍的土壤基质来缩小这一差距。使用衰减的全反射率（ATR）和定向半球反射率（DHR）测量，进行了实验室实验，以鉴定纯原油样品，干/湿矿物底物及其物理混合物中的特征。在开放的环境中设计了类似的设置，并由SEBASS传感器成像。近距离光谱法表明，与矿物底物的特征相比，PHC在7至15μm之间的特征微妙，从而阻碍了PHC光谱的直接鉴定。但是，颗粒的PHC涂层增加了背景特征的发射率，这一发现得到SEBASS数据处理使用匹配过滤技术的支持。SEBASS数据表明，除了下层基板的发射率增加外，PHC的存在还引起受污染目标温度的变化。这两个因素的结合间接地突出显示了受污染的地点。由于干净的映射，