TECHNOGENIC IMPACT OF DECOMMISSIONED SHIPS ON THE MARINE COASTAL WATERS OF KAMCHATKA (INCLUDING THE AVACHA BAY) AND NORTHERN KURILE ISLANDS

The results of survey of partially submerged and sunken ships from the waters of Kamchatka and North Kuril Gulf are presented. We aimed to assess the impact of sunken ships on the marine coastal waters in the area, including the Avacha Bay and North Kuril Gulf in the Second Kuril Strait, as well as in the Ozernaya Channel in the mouth of the Kamchatka River. We analyzed the underwater photos and videos using the remote operated underwater vehicle and also performed chemical analysis of selected samples of surface (marine) waters collected from the locations of submerged ships. Suspended substances, total iron and oil products were used as markers characterizing negative impact of sunken ships on the aquatic environment.