A Third Pond on the Mauna Kea Summit Plateau

IF 0.7 4区 生物学 Q4 MARINE & FRESHWATER BIOLOGY
Pacific Science Pub Date : 2023-01-25 DOI:10.2984/76.3.3
N. Schorghofer, M. Leopold, F. Klasner
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引用次数: 1

Abstract

Abstract: Few ponds are found in the permeable volcanic landscape of Hawaii. After Hurricane Lane passed close to Hawaii Island in August 2018, causing record rainfalls, a pond temporarily emerged on the Mauna Kea summit plateau that had never been reported before. We characterize the pond using satellite observations and electrical resistivity tomography. The shallow pond is located on glacial till 3,594 m a.s.l., and was visible for less than 1 week. The geophysical survey, carried out 10 months after the pond's appearance and disappearance, revealed a layer of low electrical resistivity at depths of about 1–3 m below the surface, which, based on laboratory analysis, likely represents a perennial body of water well protected from evaporation. The existence of a third pond, in addition to Lake Waiau and Pu‘upōhaku Pond, in the previously glaciated area suggests perching layers are not uncommon. Montmorillonite, a 3-layer shrink-swell clay that can help to perch water, was identified in the Lake Waiau area. Mineral analysis on surface samples of the third pond did not reveal such a clay mineral.
莫纳克亚山顶高原上的第三个池塘
摘要:在夏威夷可渗透的火山景观中,很少发现池塘。2018年8月,飓风莱恩在夏威夷岛附近经过,造成了创纪录的降雨量,之后,毛纳基亚山顶高原上暂时出现了一个从未有过报道的池塘。我们使用卫星观测和电阻率层析成像对池塘进行了表征。浅水池位于冰川上,直到海拔3594米,可见时间不到1周。在池塘出现和消失10个月后进行的地球物理调查显示,在地表以下约1-3米的深处有一层低电阻率,根据实验室分析,这可能代表了一个常年存在的水体,可以很好地防止蒸发。除了Waiau湖和Pu'upōhaku池塘外,在以前的冰川地区还存在第三个池塘,这表明栖息层并不罕见。蒙脱石是一种三层收缩膨胀粘土,可以帮助栖息在水中,在瓦约湖地区被发现。对第三个池塘表面样本的矿物分析没有发现这种粘土矿物。
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来源期刊
Pacific Science
Pacific Science 生物-动物学
CiteScore
1.40
自引率
14.30%
发文量
17
审稿时长
3 months
期刊介绍: Pacific Science: A Quarterly Devoted to the Biological and Physical Sciences of the Pacific Region The official journal of the Pacific Science Association. Appearing quarterly since 1947, Pacific Science is an international, multidisciplinary journal reporting research on the biological and physical sciences of the Pacific basin. It focuses on biogeography, ecology, evolution, geology and volcanology, oceanography, paleontology, and systematics. In addition to publishing original research, the journal features review articles providing a synthesis of current knowledge.
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