Combustible ice is a natural ice-like solid formed from methane and water at low temperatures and high pressures. Since it produces almost no residue after combustion, it is called "combustible ice". Combustible ice is mainly found in the permafrost zone of the ocean and land, where the ocean is the main storage area for combustible ice.
There are two main areas of combustible ice in the ocean: one is the shallow offshore area, and the other is the deep sea area. Combustible ice in the offshore area is mainly distributed in the sediments of the seabed, while combustible ice in the deep sea area is mainly distributed in the seabed landforms such as seamounts and trenches. The temperature and pressure conditions in these areas are suitable for the formation and stable presence of combustible ice.
On land, combustible ice is mainly found in the permafrost. Due to the harsh climatic conditions of the permafrost, the formation and presence of combustible ice requires specific geological and climatic conditions. In permafrost, combustible ice is usually found in permafrost hundreds of meters underground, where methane gas and water molecules form combustible ice at low temperatures and high pressures.
The formation of combustible ice requires specific temperature and pressure conditions, so it is not widely distributed on Earth. Although the reserves of combustible ice are very abundant in the world, the development and utilization of combustible ice is still in its infancy due to factors such as its distribution and development technology. At the same time, because the mining of combustible ice may cause methane gas leakage and other problems, there are also controversies and challenges in the international development and utilization of combustible ice.
In conclusion, combustible ice is an important clean energy source, but its development and utilization still need to overcome technical and environmental challenges. In the future, with the continuous progress of science and technology and the improvement of environmental awareness, it is believed that human beings will make greater breakthroughs and progress in the development and utilization of combustible ice.