Melting and refreezing beneath Roi Baudouin Ice Shelf (East Antarctica) inferred from radar, GPS, and ice core data
Melting and refreezing beneath Roi Baudouin Ice Shelf (East Antarctica) inferred from radar, GPS, and ice core data
复制标题
根据雷达、GPS 和冰芯数据推断罗伊博杜安冰架（南极洲东部）下方的融化和再冻结
DOI：
10.1029/2011jf002154
复制
发表时间：
2012
影响因子：
--
通讯作者：
J. Tison
中科院分区：
文献类型：
--
作者：
F. Pattyn;K. Matsuoka;D. Callens;H. Conway;M. Depoorter;D. Docquier;B. Hubbard;D. Samyn;J. Tison
表明该反射器图案最适合包含至少 15 cm a � 1 的基础熔化。与在南极洲西部和东部较大冰架上观察到的融化速度相比，这一融化速度较低。从靠近冰升海角的裂谷系统中提取的冰芯显示，大陆架下方积聚了数米厚的海洋冰。这些对基底融化速度较低和增生海冰分布有限的观察结果表明，要么南极地表水可能到达冰架底部，要么冰架下方的循环可能主要由高盐度陆架水的产生而不是环极地深水的侵入所主导，这意味着这里的亚陆架循环系统较弱。多宁莫德地沿岸的许多冰架与罗伊博杜安冰架一样，其特点是频繁的冰升和海角。因此，它们很可能也是浅水深测量，并且受到类似的弱侧架基底融化和再冻结。
indicate that this reflector pattern is best fit by including basal melting of at least 15 cm a � 1 . This rate of melting is low compared with rates observed on larger ice shelves in both West and East Antarctica. Ice cores extracted from a rift system close to the ice-rise promontory show several meters of marine ice accreted beneath the shelf. These observations of low rates of basal melting, and limited distribution of accreted marine ice suggest that either Antarctic surface water may reach the ice shelf base or that circulation beneath the shelf is likely dominated by the production of high salinity shelf water rather than the incursion of circumpolar deep water, implying a weak sub-shelf circulation system here. Many of the ice shelves located along the coast of Dronning Maud Land are, like Roi Baudouin Ice Shelf, characterized by frequent ice rises and promontories. Therefore, it is highly likely that these are also of shallow bathymetry and are subject to similarly weak side-shelf basal melting and refreezing.
影响因子：
18.3
作者：
Rignot, Eric;Bamber, Jonathan L.;Van Meijgaard, Erik
通讯作者：
Van Meijgaard, Erik