不同沉积层中保存的壳有不同的含量比例，显示出更新代海洋温度的变化。
Different ratios in the shells preserved in various layers of sediment reveal the temperature changes in the oceans during the Pleistocene epoch.
研究人员收集了150年以来的海洋温度数据，以便更好地了解从海洋表面到海底的热量吸收情况。
The researchers gathered 150 years of ocean temperature data in order to get a better picture of heat absorption from surface to seabed.
但较高的海洋温度会造成冰山和冰架融化，这引起了海平面上升。
But higher ocean temperatures cause icebergs and ice shelves to melt, which raises sea level.
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