This study characterizes the spectral behavior of tarmats and maps the tarmat deposits found along the coast of Ras Rakan Island off Qatar using WorldView-3 (WV-3) sensor data. The laboratory spectra of tar materials showed diagnostic absorptions features at 0.6 and 1.1 μm in the visible and near-infrared (VNIR) and 1.52, 1.73, 2.04, and 2.31 μm in the short wave infrared (SWIR) region. The panchromatic grayscale image and FCC showed the tarmat deposit as a linear warp feature between beach and water. The mapping of deposits using WV-3 data by decorrelation stretch and Linear Spectral Unmixing (LSU) methods discriminated the tarmats from the sandy soil, vegetation and sabkha features in a different tone. The capability of WV-3 sensor and the potential of image processing methods were verified by mapping the tar distribution of the Ras Ushayriq and NE of Al Ruwais.

这项研究表征了油毡的光谱特性，并使用WorldView-3（WV-3）传感器数据绘制了卡塔尔拉斯拉坎岛沿海岸发现的油毡沉积物。焦油材料的实验室光谱显示，可见光和近红外（VNIR）的诊断吸收特征为0.6和1.1μm，短波红外（SWIR）区域的诊断吸收特征为1.52、1.73、2.04和2.31μm。全色灰度图像和FCC显示，柏油沉积物是海滩和水之间的线性翘曲特征。使用WV-3数据通过去相关拉伸和线性光谱分解（LSU）方法对沉积物进行标测，以不同的色调将沥青质与沙质土壤，植被和sabkha特征区分开。