Sea level in time and space: revolutions and inconvenient truths

Sea level in time and space: revolutions and inconvenient truths
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时间和空间中的海平面:革命和难以忽视的事实

DOI:
10.1002/jqs.2771
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发表时间:
2015
影响因子:
2.3
通讯作者:
GEHRELS W
GEHRELS W
中科院分区:
地球科学3区
文献类型:
--
作者:
GEHRELS W

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在这篇文章中,我们确定了四个“革命”,在我们看来,这些革命塑造了近几十年来海平面变化的研究。(I)寻找“Estasy”。20世纪60年代争论最激烈的问题之一仍然是相关的,因为冰川均衡调整(GIA)模型需要输入在更新世大冰盖消亡后转移到世界海洋的融化水的数量。(2)解决海平面档案问题。所有海平面档案的分辨率都有限制,但我们愿意定义这些限制吗?从对盐沼沉积物和珊瑚的研究来看,气候驱动的米级海平面波动很可能在全新世中后期没有发生过。(3)海平面快速变化。改进的取心技术导致了在最后一次冰川消融期间出现融水脉冲的可能性。在地震活跃的海岸线上记录了低频高震级事件,并提供了关于地震危害和风暴影响的信息。(4)合并经验海平面调查和模型。在过去的二十年里,许多海平面研究都采用了模型和现场数据的整合,提供了可检验的假设和对过程的洞察。最后,我们给出了一些提醒,让这位海平面上的科学家保持诚实的“难以接受的真相”。
In this paper we identify four ‘revolutions’ that in our view have shaped the study of sea‐level changes in recent decades. (i)The search for ‘eustasy’. One of the most hotly debated issues in the 1960s is still relevant as models of glacial isostatic adjustment (GIA) require input of the amount of meltwater transferred to the world's oceans following the demise of the large Pleistocene ice sheets. (ii)Resolution of sea‐level archives. All sea‐level archives have limitations in their resolving power but are we willing to define these? From studies of salt‐marsh deposits and corals it is highly likely that climate‐driven metre‐scale sea‐level fluctuations have not occurred during the middle and late Holocene. (iii)Rapid sea‐level changes. Improved coring technology has resulted in the suggestion of meltwater pulses during the last deglaciation. Low‐frequency high‐magnitude events have been documented along seismically active shorelines and provide information on seismic hazards and storm impacts. (iv)Merging of empirical sea‐level investigations and models. Much sea‐level research in the past two decades has embraced the integration of models and field‐derived data, providing testable hypotheses and insights into processes. We conclude with some reminders about the ‘inconvenient truths’ that keep the sea‐level scientist honest.
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