Source: Earth’s Future This is an authorized translation of an Eos article. 本文是Eos文章的授权翻译。 随着气候变化持续推动全球海平面上升,许多生活在沿海地区的居民已感受到其影响。海岸侵蚀正在加速,海岸线向内陆移动,风暴潮也愈演愈烈。但隐藏在地表之下的还有另一个迄今为止鲜为人知的严重后果:地下水位上升。 有证据表明,在一些地势低洼、地下水位较浅的沿海地区,海平面上升将导致地下水位同步上升,这可能会给住宅、企业和其他基础设施带来严重风险。 在一篇聚焦新西兰沿海城市达尼丁的新论文中,Cox等人展示了一种预测海平面上升如何改变地下水位,从而增加内陆洪涝灾害的方法。达尼丁南部已经经历了周期性洪涝灾害,随着海平面上升,洪涝灾害将变得更加严峻。研究人员将该城市描述为新西兰社区应对和适应气候变化和海平面上升的典范。 研究人员使用了2019年至2023年的数据,这些数据来自安装在达尼丁低洼沿海地区的35个地下水传感器网络,该市的大部分基础设施都位于该区域。他们将传感器数据与潮汐、降雨和其他因素的数据进行比较,来预测未来海平面上升对地下水的影响。 研究结果表明,海平面上升首先会导致地下水位上升,从而降低土地吸收降雨的能力。随着海平面继续上升,地下水位可能会进一步上升,并在地下水位以下造成问题,例如淹没污水处理系统、渗入地下室以及破坏建筑物地基。最终,地下水可能会上升到足够高的地方,形成泉水,引发洪水。 研究人员得出结论,地下水位上升造成的洪水灾害可能向内陆延伸到比许多人预期的更远的地方。此外,假设达尼丁沙丘屏障的防护地形不发生重大变化,这些地下水效应将比海平面上升直接造成的洪水更早发生。 研究人员指出,他们的方法包含关键的假设和不确定性——例如,地下水和海平面将以相同的速度上升,地下水位将保持大致相同的形状,但保守的预测对于达尼丁的规划和灾害管理具有重要价值。他们表示,由于该方法相对简单且成本低廉,因此也可以应用到世界各地类似的沿海地区。...
Science
For decades, wounds have surfaced in the Peruvian Amazon where the Rio Inambari merges with the Rio...
Source: Geophysical Research Letters Artificial intelligence (AI) algorithms can produce weather predictions more quickly than traditional algorithms...
Editors’ Highlights are summaries of recent papers by AGU’s journal editors. Source: Geophysical Research Letters River discharge...
The Landslide Blog is written by Dave Petley, who is widely recognized as a world leader in...
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But two Trump-appointed judges indicated they may consider this a contract claim that would have to be...
Source: AGU Advances The Amazon Basin lost about 27,000 square kilometers of forest each year from 2001...
Over the past few years, hurricanes in the Gulf of Mexico have broken records for their intensity...
Editors’ Highlights are summaries of recent papers by AGU’s journal editors. Source: Journal of Geophysical Research: Atmospheres...
The Government Accountability Office told the DOGE acting administrator that it is part of the legislative branch....
Source: Journal of Geophysical Research: Oceans In high-latitude Arctic fjords, warming seas and reduced sea ice are...
This article originally appeared on Inside Climate News, a nonprofit, non-partisan news organization that covers climate, energy,...
Source: AGU Advances Not all extreme weather hazards are sufficiently documented in global databases. For instance, life-threatening...
Editors’ Highlights are summaries of recent papers by AGU’s journal editors. Source: Geophysical Research Letters Using recent...
Arizona Rep. Juan Ciscomani and other rank-and-file Republicans are facing a tough choice: resist Donald Trump’s efforts...
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Source: Geophysical Research Letters Fifty-six million years ago, during the Paleocene-Eocene Thermal Maximum (PETM), global temperatures rose...
Source: AGU Advances This is an authorized translation of an Eos article. 本文是Eos文章的授权翻译。 确定全球干旱状况的变化在多大程度上归因于自然水文气候变化,又在多大程度上是由气候变化造成的,是一项复杂的任务。科学家经常使用复杂的计算机模型来模拟过去的气候变化,并识别前所未有的干旱状况。这些模型还可以帮助识别导致这些状况的因素,例如温度、降水和土地利用变化。然而,这些模型也可能存在偏差,这可能会影响某些地区干旱估计的可信度。 由于树木年轮在较温暖、较潮湿的年份长得较宽,而在较干燥、较寒冷的年份则长得比较薄,因此它们可以作为自然气候变化的记录,并为基于模型的水文气候重建提供一种补充方法。为了研究欧洲和亚洲的干旱情况,Marvel 等人利用新出版的《大欧亚干旱图集》(GEDA)进行了树木年轮测量,该图集包含了公元 1000...
Source: Water Resources Research Global river datasets represent rivers that flow downstream in single paths that follow...