Open AccessUSING MEDIUM-RESOLUTION SATELLITE IMAGES TO ASSESS IMPACT OF VOLCANIC EXPLOSIONS ON ECOSYSTEMS
Author(s) -
Alexey A. Verkhoturov,
Vyacheslav A. Melkiy,
Inna I. Lobishcheva
Publication year - 2020
Publication title -
interèkspo geo-sibirʹ
Language(s) - English
Resource type - Journals
ISSN - 2618-981X
DOI - 10.33764/2618-981x-2020-4-1-3-11
Subject(s) - volcano , ecosystem , remote sensing , satellite , geology , normalized difference vegetation index , ecological succession , physical geography , satellite imagery , earth science , submarine volcano , environmental science , geography , oceanography , climate change , ecology , paleontology , aerospace engineering , engineering , biology
Activation of volcanic processes can lead to catastrophic consequences for ecosystems, loss of life and significant material damage. Territory of the Kuril Islands and the Kamchatka territory is a risk zone. Therefore, research in this direction is extremely important. The aim of the study was to determine the pattern degradation of ecosystem during explosions and the rate of succession in the affected territories using medium-resolution Landsat and Sentinel satellite images. The paper presents results of an area-based assessment of impact on ecosystems of the North-Western part of Atlasov Island (Kuril Islands) of eruption of volcano Alaid in 1972. Based on use of 1972-2019 medium-resolution satellite images of Landsat and Sentinel systems, NDVI values were calculated in geoinformation system, which allowed tracing dynamics and nature of successions of affected area. It was found that multi-zone images of medium resolution allow determining the essence of processes occurring on territories where solid products of eruptions fell out quite qualitatively.