WorldView-3 mapping of Tarmat deposits of the Ras Rakan Island, Northern Coast of Qatar: Environmental perspective

Sankaran Rajendran*, Jassim A. Al-Khayat, S. Veerasingam, Sobhi Nasir, P. Vethamony, Fadhil N. Sadooni, Hamad Al Saad Al-Kuwari

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


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.

Original languageEnglish
Article number111988
JournalMarine Pollution Bulletin
Publication statusPublished - Feb 2021
Externally publishedYes


  • Mapping
  • Qatar
  • Ras Rakan Island
  • Tar deposit
  • WorldView-3

ASJC Scopus subject areas

  • Oceanography
  • Aquatic Science
  • Pollution

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