A 400,000-year record of temperature is preserved in the Antarctic ice sheet, which, except for coastal fringes, escaped melting even in the warmest interglacial periods.

• 南极冰原里保存了长达40万年的气温记录。南极冰原，除了在海岸边缘部份之外，即使在最温暖的间冰期也没有完全融化过。