RESEARCH FOCUS: A wide variety of unique environments beneath the Antarctic ice sheet
RESEARCH FOCUS: A wide variety of unique environments beneath the Antarctic ice sheet
复制标题
研究重点：南极冰盖下的各种独特环境
DOI：
10.1130/focus052016.1
复制
发表时间：
2016
期刊：
影响因子：
5.8
通讯作者：
Siegert M
中科院分区：
文献类型：
--
作者：
Siegert M
研究焦点400 www.格萨酒吧。组织|第44卷| 5号|地质钻探时，水深仅为约 5 英尺。众所周知，该湖本身受到流入和流出的严重影响，这意味着它可能不太可能代表一个独立的生态系统。因此，虽然惠伦斯湖取得了重大的科学和技术进步，但过去二十年来推动冰下湖泊研究的假设仍未得到检验。沃斯托克湖是一个最终的研究目标，因为它很古老，而且生物多样性随着规模的大小而变化。在这里以及其他孤立的深水湖泊中，对水柱的测量和采样将确定其化学和物理分层、混合程度以及生物体的空间浓度。由于湖泊太大，一个采样点不足以将其理解为一个系统。虽然俄罗斯科学家计划继续使用冰芯对湖泊进行采样，但仍需要清洁热水钻探来进一步开展勘探。鉴于东南极洲内陆地面研究面临巨大的技术、后勤和物理挑战，这项实验很可能会在其他地方得到完善。事实上，尽管埃尔斯沃思湖的勘探遇到了挫折，但它仍然非常适合推进技术和测试这两个基本假设。然而，冰下湖泊并不是南极洲唯一的水环境形式。已经确定了地下水可能渗透的沉积盆地。一种假设是，由于生物地球化学过程，它们含有甲烷储存（Wadham 等，2012），也可以通过直接测量和采样进行测试。
RESEARCH FOCUS400 www. gsapubs. org| Volume 44| Number 5| GEOLOGY time of drilling, the water depth was only~ 5 ft. The lake itself is known to be heavily affected by inflows and discharges, meaning it is probably unlikely to represent a stand-alone ecosystem. Hence, while significant scientific and technical advances have been made at Lake Whillans, the hypotheses that have driven subglacial lake research over the last two decades remain untested.Lake Vostok is an ultimate research target, as it is ancient and because biodiversity scales with size. Here, and in other isolated deep-water lakes, measurement and sampling of the water column will determine its chemical and physical stratification, the degree of mixing, and the spatial concentrations of living organisms. Because the lake is so large, one sampling point is insufficient to understand it as a system. While Russian scientists plan to continue using the ice core to sample the lake, clean hotwater drilling will be needed to develop the exploration further. Given the substantial technical, logistical, and physical challenges in ground-based research in interior East Antarctica, it is likely this experiment will be perfected elsewhere. Indeed, despite the setbacks to the exploration of Lake Ellsworth, it remains well suited both to advancing the technology and to testing the two basic hypotheses. Subglacial lakes are not the only form of aqueous environment in Antarctica, however. Sedimentary basins have been identified where groundwater may permeate. A hypothesis that they contain stores of methane due to biogeochemical processes (Wadham et al., 2012) is also testable with direct measurement and sampling.
登录
查看更多内容
DOI：
10.1098/rsta.2014.0306
发表时间：
2016-01-28
期刊：
Philosophical transactions. Series A, Mathematical, physical, and engineering sciences
影响因子：
--
作者：
Siegert MJ;Ross N;Le Brocq AM
通讯作者：
Le Brocq AM
影响因子：
1.6
作者：
Andrew Wright;M. Siegert
通讯作者：
Andrew Wright;M. Siegert
南极洲威兰斯冰流的粘滑运动动力学
影响因子：
5.3
作者：
J. P. Winberry;S. Anandakrishnan;D. Wiens;R. Alley;K. Christianson
通讯作者：
K. Christianson
DOI：
10.1098/rsta.2014.0292
发表时间：
2016-01-28
影响因子：
5
作者：
Bulat, Sergey A.
通讯作者：
Bulat, Sergey A.
影响因子：
25.2
作者：
M. Siegert;Rachel J. Clarke;M. Mowlem;N. Ross;Christopher S. Hill;A. Tait;D. Hodgson;J. Parnell;M. Tranter;D. Pearce;M. J. Bentley;C. Cockell;M. Tsaloglou;Andrew M. Smith;J. Woodward;M. Brito;E. Waugh
通讯作者：
M. Siegert;Rachel J. Clarke;M. Mowlem;N. Ross;Christopher S. Hill;A. Tait;D. Hodgson;J. Parnell;M. Tranter;D. Pearce;M. J. Bentley;C. Cockell;M. Tsaloglou;Andrew M. Smith;J. Woodward;M. Brito;E. Waugh