冰川消退指由于全球气候逐渐变暖等因素,冰川的面积和体积都出现明显的减少,有些甚至消失的现象。这种现象在低和中纬度的地方尤其显著。科学家预计,到2050年,全球大约1/4以上冰川将消失。亟需世人采取措施遏制全球变暖的趋势来保护冰川。
这一升温速度远高于约1.2万年前的最后一次冰川消退。
That rate of heating is far greater than during the last glacial retreat some 12,000 years ago.
虽然在冰川消退期间二氧化碳含量的变化与温度的变化密切相关,但它显然滞后于冷却期间的温度。
Although change in carbon dioxide content closely follows change in temperature during periods of deglaciation, it apparently lags behind temperature during periods of cooling.
更多近期的地质研究证明了13000年前的冰川消退现象和整个加拿大不列颠哥伦比亚省主要沿海地区内无冰区的存在。
More recent geologic studies documented deglaciation and the existence of ice-free areas throughout major coastal areas of British Columbia, Canada, by 13,000 years ago.
应用推荐