目前,全球范围内已直接或间接发现的可燃冰矿点中97%集中在海洋,其余3%主要位于陆地冻土带。自上世纪60年代起,以美国、日本、德国、韩国、印度为代表的一些国家都制订了可燃冰勘探开发研究计划。迄今,人们已在近海海域与冻土区发现可燃冰矿点超过230处,涌现出一大批可燃冰热点研究区。近年来,在一些研究比较深入 At present, 97% of the combustible ice deposits that have been discovered directly or indirectly in the world are concentrated in the oceans and the remaining 3% are mainly in the tundra. Since the 1960s, some countries represented by the United States, Japan, Germany, South Korea and India have formulated research plans for combustible ice exploration and development. So far, more than 230 flammable ice deposits have been discovered in offshore waters and permafrost regions, and a large number of hot flammable ice study areas have emerged. In recent years, some studies are more in-depth