Nordic Seas intermediate water leaves through the Denmark Straight and the Iceland Ridge. The densest overflow waters leave through the Faroe Bank Channel. The water masses that encompass the Nordic Seas are always changing in response to the local variations that occur between atmosphere-ocean fluxes and convection of intermediate to deep water. The Nordic Seas are found between the North Atlantic and the Arctic Ocean, both having variable surface water conditions. The Nordic Seas are complex in the variety of water masses it contains: two surface waters, three intermediate waters, and three deep waters. Figure 3 shows the water mass circulations that
Kara Sea Port and Dikson and it is important as a fishing ground although the sea is ice-bound for all but two months of the year. Significant discoveries of petroleum and natural gas, the East-Prinovozemelsky field, an extension of the West Siberian Oil Basin, have been made but have not yet been developed. In 2014, US government sanctions resulted in Exxon having until September 26 to discontinue its operations in the Kara Sea. The International Hydrographic Organization defines the limits of the Kara Sea as follows: There are many islands and island groups in the Kara Sea. Unlike the other marginal seas