Differences in behavior and distribution of permafrost‐related lakes in Central Yakutia and their response to climatic drivers

Differences in behavior and distribution of permafrost‐related lakes in Central Yakutia and their response to climatic drivers
复制标题

雅库特中部永久冻土相关湖泊的行为和分布差异及其对气候驱动因素的响应

DOI:
10.1002/2016wr019267
复制
发表时间:
2017
影响因子:
5.4
通讯作者:
Fedorov
Fedorov
中科院分区:
地球科学1区
文献类型:
--
作者:
Ulrich;Matthes;Schirrmeister;Schütze;Iijima;Fedorov

文献摘要

参考文献

被引文献

相似文献

由于土地利用和全球变暖,雅库特中部永久冻土景观正在迅速改变,但对小尺度热岩溶过程的变异性和水文条件知之甚少。我们分析了湖泊面积的变化和融化沉降的年轻热岩溶湖泊冰复杂的存款(yedoma湖)在过去70年来在阿拉斯盆地的残留湖泊相比,在当地的研究地点,我们记录区域湖泊的大小和分布在不同的富冰永冻土阶地使用卫星和历史航空图像。气候和地温数据的统计分析确定了yedoma和alas湖变化的驱动因素。总的来说,今天的湖泊面积比1944年大,但湖泊水位在70年内波动很大,平均湖泊半径变化率为1.6 ± 3.0米/年。人为干扰和森林退化开始,气候迫使快速,持续的yedoma-lake增长。在整个观测期内,Yedoma湖半径的平均变化率为1.2 ± 1.0米/年。Yedoma湖下的平均融化沉降为6.2 ± 1.4 cm/年。多元回归分析表明,冬季降水量,冬季温度和活动层属性是两种湖泊类型面积变化的主要控制因素;夏季天气和冻土条件也会影响yedoma-lake的增长率。由于较大的集水面积和地下水文条件,湖泊变化的主要控制因素尚不清楚。目前,热岩溶活动的增加与具有较高地冰含量的较老阶地有关,但热岩溶活动可能会保持较高水平,在不久的将来,雅库特中部盆地的潮湿条件将持续存在。
The Central Yakutian permafrost landscape is rapidly being modified by land use and global warming, but small‐scale thermokarst process variability and hydrological conditions are poorly understood. We analyze lake‐area changes and thaw subsidence of young thermokarst lakes on ice‐complex deposits (yedoma lakes) in comparison to residual lakes in alas basins during the last 70 years for a local study site and we record regional lake size and distribution on different ice‐rich permafrost terraces using satellite and historical airborne imagery. Statistical analysis of climatic and ground‐temperature data identified driving factors of yedoma‐ and alas‐lake changes. Overall, lake area is larger today than in 1944 but alas‐lake levels have oscillated greatly over 70 years, with a mean alas‐lake‐radius change rate of 1.6 ± 3.0 m/yr. Anthropogenic disturbance and forest degradation initiated, and climate forced rapid, continuous yedoma‐lake growth. The mean yedoma lake‐radius change rate equals 1.2 ± 1.0 m/yr over the whole observation period. Mean thaw subsidence below yedoma lakes is 6.2 ± 1.4 cm/yr. Multiple regression analysis suggests that winter precipitation, winter temperature, and active‐layer properties are primary controllers of area changes in both lake types; summer weather and permafrost conditions additionally influence yedoma‐lake growth rates. The main controlling factors of alas‐lake changes are unclear due to larger catchment areas and subsurface hydrological conditions. Increasing thermokarst activity is currently linked to older terraces with higher ground‐ice contents, but thermokarst activity will likely stay high and wet conditions will persist within the near future in Central Yakutian alas basins.
根据硅藻记录推断雅库特中部(东西伯利亚)受永久冻土影响的湖泊的当今变化和全新世动态
DOI: 10.1016/j.quascirev.2012.06.020
发表时间: 2012
影响因子: 4
作者:
L. Pestryakova;U. Herzschuh;S. Wetterich;M. Ulrich
通讯作者: M. Ulrich
雅库特中部的湿度变化和热岩溶过程的动力学
DOI: --
发表时间: --
期刊:
影响因子: --
作者:
N. P. Bosikov
通讯作者: N. P. Bosikov
西伯利亚富含冰的永久冻土中的热岩溶:与火星上不对称扇形凹陷的比较
DOI: 10.1029/2010je003640
发表时间: 2010
影响因子: --
作者:
M. Ulrich;A. Morgenstern;F. Günther;D. Reiss;K. Bauch;E. Hauber;S. Rössler;Lutz Schirrmeister
通讯作者: Lutz Schirrmeister
俄罗斯东北欧两个泥炭高原地区热岩溶湖形态和侵蚀特征
DOI: --
发表时间: 2013
期刊:
影响因子: --
作者:
Y. Sjöberg;G. Hugelius;P. Kuhry
通讯作者: P. Kuhry
DOI: 10.5194/tc-5-849-2011
发表时间: 2011-01-01
期刊: CRYOSPHERE
影响因子: 5.2
作者:
Morgenstern, A.;Grosse, G.;Schirrmeister, L.
通讯作者: Schirrmeister, L.