新系统的秘密在于地震深度对地震性质的改变不仅仅停留在是否引发海啸的问题上。
The secret of the new method is that depth changes an earthquake's character in ways other than just its tsunami-generating propensity.
通过研究冰层之间化学性质各异的冰水，研究者们可以追溯古代大气、生态系统、森林大火、地震和日照的变化情况。
In layer upon layer of chemically distinctive water are traces of past atmospheres and ecosystems, forest fires and earthquakes and solar variation.
发生在海地的具有摧毁性质的7.3级地震发生后，在瓦砾堆下发现生还人员的几率每天都在骤降。
With each day that passed following Haiti's devastating 7.3-magnitude earthquake, the odds of uncovering anyone alive underneath the rubble plummeted27.
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