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1983年在中国东北的北纬50°32′、东经121°29′的伊图里河首次发现冰楔。这些冰楔可能为不活动冰楔。这是我国第一次发现冰楔,也是迄今为止地球上所发现的纬度最靠南的冰楔。
The ice wedge was first discovered in the Ituri River in northwestern China at 50 ° 32 ’and 121 ° 29’ East longitude in 1983. These ice wedges may be inactive ice wedges. This is the first time in our country that ice wedges have been discovered and the ice wedge most latched to the south by the earth so far.