不列颠群岛近岸50 km范围内,海底沉积物中的浅层气分布主要与冰后期沉积物中的有机质降解有关。然而,有证据表明,某些地方基岩地形也是浅层气存在的一个控制因素。在这些地方,气体通过裂隙从岩石中逃逸。浅层气通常聚集在切割基岩被疏松沉积物所覆盖的河道中央。原因可能是河道 Within 50 km of the British Isles near the shore, the distribution of shallow gas in the seabed sediments is mainly related to the degradation of organic matter in the late-glacial sediments. However, there is evidence that bedrock topography in some places is also a controlling factor for the existence of shallow gas. In these places, gas escapes through the rock through the rock. Shallow gas generally collects in the center of the channel where the bedrock is covered by unconsolidated sediments. The reason may be the river