| DOI: | 10.1002/2013GL058023
|
| 论文题名: | Ice shelf density reconstructed from optical televiewer borehole logging |
| 作者: | Hubbard B.; Tison J.-L.; Philippe M.; Heene B.; Pattyn F.; Malone T.; Freitag J.
|
| 刊名: | Geophysical Research Letters
|
| ISSN: | 0094-8363
|
| EISSN: | 1944-8094
|
| 出版年: | 2013
|
| 卷: | 40, 期:22 | | 起始页码: | 5882
|
| 结束页码: | 5887
|
| 语种: | 英语
|
| 英文关键词: | firn density
; ice shelf density
; optical televiewing
; OPTV
|
| Scopus关键词: | Accumulation rates
; Annual temperatures
; Firn densities
; Ice shelves
; optical televiewing
; OPTV
; Precise correlations
; Water equivalent
; Coremaking
; Luminance
; Snow
; Ice
; accumulation rate
; borehole logging
; firn
; ice shelf
; Antarctica
; East Antarctica
; Roi Baudouin Ice Shelf
|
| 英文摘要: | Optical televiewer luminosity logs are compared with densities measured gravimetrically on 520 snow, firn, and ice samples from two locations of similar annual temperature (∼ -14°C) and contrasting accumulation rates (0.23 and 0.43 m water equivalent per year) on the Roi Baudouin Ice Shelf, Antarctica. At the scale of ≥10-1 m, an inverse exponential relationship (R2 = 0.96) is recorded between density and luminosity, indicating (i) that optical televiewing luminosity provides an effective proxy for density at such ice shelves and (ii) that densities may be reconstructed from boreholes drilled elsewhere by hot water without the need for core material. Our analysis also suggests that this relationship may hold for newly formed ice as well as for snow and firn. At the scale of ≤10-1 m, both luminosity and density show similar patterns, but precise correlation is confounded by detailed differences between the two records. ©2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887697542&doi=10.1002%2f2013GL058023&partnerID=40&md5=3f0a6be7028a88fd9069b6a365029acd
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/5627
|
| Appears in Collections: | 气候减缓与适应
|
|
There are no files associated with this item.
|
|
作者单位: | Centre for Glaciology, Institute of Geography and Earth Sciences, Aberystwyth University, Aberystwyth SY23 3DB, United Kingdom
|
| Recommended Citation: | |
Hubbard B.,Tison J.-L.,Philippe M.,et al. Ice shelf density reconstructed from optical televiewer borehole logging[J]. Geophysical Research Letters,2013-01-01,40(22).
|
|
|