Surface accumulation on Foundation Ice Stream, Antarctica
نویسندگان
چکیده
منابع مشابه
The marginal shear stress of Ice Stream B , West Antarctica
To ascertain whether the , ·elocity of Ice Stream B, \\'est Antarctica, may be controlled by the stres e in its marginal shear zones \ the .. Snake" and the .. Dragon'· ), we undertook a determination of the marginal hear stress in the Dragon near Camp up B by using ice itself as a stress meter. The ob erved marginal shear strain rate of0.14 a I is used to calculate the marginal shear stress fr...
متن کاملChanges in the Margin of Ice Stream C, Antarctica
We present results from satellite imagery, ice motion surveys, and ice-penetrating radar studies of a portion of the north margin of Ice Stream C, one of the ice streams draining the West Antarctic Ice Sheet to the Ross Embayment. Our studies suggest that the shutdown of Ice Stream C about 150 years ago was not a single event but a sequence involving stagnation of ice and migration of the ice s...
متن کاملBasal topographic controls on the stability of theWest Antarctic ice sheet: lessons from Foundation Ice Stream
Using observations of basal topography, ice thickness and modern accumulation rates, we use theory and a dynamic flowline model to examine the sensitivity of Antarctica’s Foundation Ice Stream to changes in sea level, accumulation and buttressing at the grounding line. Our sensitivity studies demonstrate that the steep, upward-sloping basal topography inland from the grounding line serves to st...
متن کاملSubglacial controls on the flow of Institute Ice Stream, West Antarctica
The Institute Ice Stream (IIS) rests on a reverse-sloping bed, extending >150 km upstream into the ∼1.8 km deep Robin Subglacial Basin, placing it at the threshold of marine ice-sheet instability. Understanding IIS vulnerability has focused on the effect of grounding-line melting, which is forecast to increase significantly this century. Changes to ice-flow dynamics are also important to IIS st...
متن کاملThe surface climatology of the Ross Ice Shelf Antarctica
The University of Wisconsin-Madison Antarctic Automatic Weather Station (AWS) project has been making meteorological surface observations on the Ross Ice Shelf (RIS) for approximately 30 years. This network offers the most continuous set of routine measurements of surface meteorological variables in this region. The Ross Island area is excluded from this study. The surface climate of the RIS is...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Annals of Glaciology
سال: 1999
ISSN: 0260-3055,1727-5644
DOI: 10.3189/172756499781820987