Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2021, Vol. 18, No. 3, pp. 332-336
Satellite observations of the eruption of a mud volcano on the Dashly Island in the Caspian Sea on July 4, 2021
O.Yu. Lavrova
1 , I.A. Uvarov
1 , Yu.S. Krasheninnikova
1 1 Space Research Institute RAS, Moscow, Russia
Accepted: 13.07.2021
DOI: 10.21046/2070-7401-2021-18-3-332-336
The southwestern part of the Caspian Sea is an area of active mud volcanism. However, it is extremely rare to record the moment of the eruption itself. Such an eruption in the form of an explosion, which occurred on July 4, 2021 on the island of Dashly, was registered from the ships, and also in the data of the SLSTR Sentinel 3A, 3B radiometers in the form of a thermal anomaly. Natural outputs of petroleum hydrocarbons associated with mud volcanism in the area of Dashly Island are regularly manifested in satellite images of high spatial resolution, of both optical and radar sensors. The article provides examples of such manifestations before and after the eruption. As shown by radar observations, the area of Dashly Island increased by 2.4 times after the eruption.
Keywords: mud volcanoes, eruption, satellite radar sensing, radiometers, Sentinel 1/2/3, Caspian Sea, IKI-Monitoring Center
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