Morphological and sedimentary responses to ice mass interaction during the last deglaciation

Morphological and sedimentary responses to ice mass interaction during the last deglaciation
复制标题

末次冰消期冰团相互作用的形态和沉积响应

DOI:
10.1002/jqs.2864
复制
发表时间:
2016
影响因子:
2.3
通讯作者:
Chiverrell R
Chiverrell R
中科院分区:
地球科学3区
文献类型:
--
作者:
Chiverrell R

文献摘要

参考文献

被引文献

相似文献

在最后一次英国-爱尔兰冰原(BIIS)下降期间,冰的下降-浪费意味着当地来源在调节冰流动力学和驱动沉积物和地貌记录方面发挥了更大的作用。末次盛冰期,英格兰西北部的冰川与爱尔兰海盆东部的爱尔兰海冰流(ISIS)相互作用,形成一个统一的冰块。在21 ~ 17.3 ka的退缩过程中,沉积地貌组合反映了退缩过程中冰块的逐渐解缩和冰缘的震荡,然后迅速的损耗和解体。首先从里布尔山谷和兰开夏郡撤走了冰,而ISIS占领了西部的ISB,形成了冰坝湖泊。在18.6-17.3 ka之后完成的消冰作用是快速的(50-25 m a−1),但比西ISIS的速率(550-100 m a−1)要慢。较慢的速度被解释为反映了冰裂边缘的缺乏和陆地冰川的减少。在退缩期间冰边缘振荡可能是由冰盖动力学而不是气候变化所强迫的。这些数据表明,大型地面冰川在消冰过程中可以表现出复杂的解耦和重新排列,相邻冰瓣之间的不同步行为产生了复杂的地貌记录。
During decline of the last British–Irish Ice Sheet (BIIS) down‐wasting of ice meant that local sources played a larger role in regulating ice flow dynamics and driving the sediment and landform record. At the Last Glacial Maximum, glaciers in north‐western England interacted with an Irish Sea Ice Stream (ISIS) occupying the eastern Irish Sea basin (ISB) and advanced as a unified ice‐mass. During a retreat constrained to 21–17.3 ka, the sediment landform assemblages lain down reflect the progressive unzipping of the ice masses, oscillations of the ice margin during retreat, and then rapid wastage and disintegration. Evacuation of ice from the Ribble valley and Lancashire occurred first while the ISIS occupied the ISB to the west, creating ice‐dammed lakes. Deglaciation, complete after 18.6–17.3 ka, was rapid (50–25 m a−1), but slower than rates identified for the western ISIS (550–100 m a−1). The slower pace is interpreted as reflecting the lack of a calving margin and the decline of a terrestrial, grounded glacier. Ice marginal oscillations during retreat were probably forced by ice‐sheet dynamics rather than climatic variation. These data demonstrate that large grounded glaciers can display complex uncoupling and realignment during deglaciation, with asynchronous behaviour between adjacent ice lobes generating complex landform records.
DOI: 10.3189/172756499781821625
发表时间: 1999
影响因子: 2.9
作者:
C. Stokes;C. Clark
通讯作者: C. Clark
末次盛冰期,冰盖延伸至凯尔特海陆架边缘
DOI: 10.1016/j.quascirev.2014.12.010
发表时间: 2015
影响因子: 4
作者:
D. Praeg;S. Mccarron;D. Dove;C. Ó. Cofaigh;Gill Scott;X. Monteys;L. Facchin;R. Romeo;P. Coxon
通讯作者: P. Coxon
马林大陆架冰盖扩张和衰退的海洋地球物理证据:英属爱尔兰冰盖西部界限的新证据
DOI: --
发表时间: 2010
期刊:
影响因子: --
作者:
P. Dunlop;Rachel Shannon;M. McCabe;R. Quinn;E. Doyle
通讯作者: E. Doyle
爱尔兰东部邓多克湾晚更新世冰瓣边缘的沉积作用,终止于浅海环境
DOI: --
发表时间: 1987
期刊:
影响因子: --
作者:
A. Mccabe;G. F. Dardis;P. Hanvey
通讯作者: P. Hanvey
耦合关系:英格兰西北部霍德流域的山坡-河流联系
DOI: --
发表时间: 2009
期刊:
影响因子: --
作者:
R. Chiverrell;G. Foster;P. Marshall;A. Harvey;G. Thomas
通讯作者: G. Thomas