Freeboard and mass extraction of the disintegrated Mertz Ice Tongue with remote sensing and altimetry data

Xianwei Wang, Xiao Cheng, Peng Gong, C. K. Shum, David M. Holland, Xiaowen Li

Research output: Contribution to journalArticle

Abstract

In February 2010, the Mertz Ice Tongue (MIT) collapsed and generated a giant iceberg. However, parameters about this iceberg have not been calculated and published in detail. In this study, the freeboard map of this iceberg was generated for the first time using a time-series ICESat/GLAS data. Methods for producing the freeboard map of this iceberg are suggested. Field data for ice velocity were used to relocate the footprints collected by different campaigns. Cross-validation was conducted with freeboards extracted from crossovers observed within 30days of each other. The precision of the freeboard extraction is approximately ±0.50m, when taking one standard deviation as the precision. The freeboard varied from 23m to 59m with the mean of 41m. With assumption of hydrostatic equilibrium (assuming a snow layer depth of 1m, a snow density of 360kg/m3, an ice density of 915kg/m3 and a sea water density of 1024kg/m3), the minimum, maximum and average ice thickness were calculated as 210m, 550m and 383m respectively. The total ice loss is approximately 8.96×1011tons over an area, 34km in width and 75km in length, or approximately 2560±5km2. These parameters extracted from remote sensing and altimetry data will provide additional information for studies of the evolution of iceberg, especially in iceberg tracking system.

Original languageEnglish (US)
Pages (from-to)1-10
Number of pages10
JournalRemote Sensing of Environment
Volume144
DOIs
StatePublished - Mar 25 2014

Fingerprint

icebergs
iceberg
altimetry
tongue
remote sensing
Ice
Remote sensing
ice
Snow
snow
ICESat
ice thickness
Time series
hydrostatics
footprint
time series analysis
seawater
time series
Water

Keywords

  • Freeboard
  • Ice thickness
  • ICESat
  • Mertz Ice Tongue
  • Remote sensing

ASJC Scopus subject areas

  • Computers in Earth Sciences
  • Soil Science
  • Geology

Cite this

Freeboard and mass extraction of the disintegrated Mertz Ice Tongue with remote sensing and altimetry data. / Wang, Xianwei; Cheng, Xiao; Gong, Peng; Shum, C. K.; M. Holland, David; Li, Xiaowen.

In: Remote Sensing of Environment, Vol. 144, 25.03.2014, p. 1-10.

Research output: Contribution to journalArticle

Wang, Xianwei ; Cheng, Xiao ; Gong, Peng ; Shum, C. K. ; M. Holland, David ; Li, Xiaowen. / Freeboard and mass extraction of the disintegrated Mertz Ice Tongue with remote sensing and altimetry data. In: Remote Sensing of Environment. 2014 ; Vol. 144. pp. 1-10.
@article{20835504d8d94e2d97bf28f386f8466e,
title = "Freeboard and mass extraction of the disintegrated Mertz Ice Tongue with remote sensing and altimetry data",
abstract = "In February 2010, the Mertz Ice Tongue (MIT) collapsed and generated a giant iceberg. However, parameters about this iceberg have not been calculated and published in detail. In this study, the freeboard map of this iceberg was generated for the first time using a time-series ICESat/GLAS data. Methods for producing the freeboard map of this iceberg are suggested. Field data for ice velocity were used to relocate the footprints collected by different campaigns. Cross-validation was conducted with freeboards extracted from crossovers observed within 30days of each other. The precision of the freeboard extraction is approximately ±0.50m, when taking one standard deviation as the precision. The freeboard varied from 23m to 59m with the mean of 41m. With assumption of hydrostatic equilibrium (assuming a snow layer depth of 1m, a snow density of 360kg/m3, an ice density of 915kg/m3 and a sea water density of 1024kg/m3), the minimum, maximum and average ice thickness were calculated as 210m, 550m and 383m respectively. The total ice loss is approximately 8.96×1011tons over an area, 34km in width and 75km in length, or approximately 2560±5km2. These parameters extracted from remote sensing and altimetry data will provide additional information for studies of the evolution of iceberg, especially in iceberg tracking system.",
keywords = "Freeboard, Ice thickness, ICESat, Mertz Ice Tongue, Remote sensing",
author = "Xianwei Wang and Xiao Cheng and Peng Gong and Shum, {C. K.} and {M. Holland}, David and Xiaowen Li",
year = "2014",
month = "3",
day = "25",
doi = "10.1016/j.rse.2014.01.002",
language = "English (US)",
volume = "144",
pages = "1--10",
journal = "Remote Sensing of Environment",
issn = "0034-4257",
publisher = "Elsevier Inc.",

}

TY - JOUR

T1 - Freeboard and mass extraction of the disintegrated Mertz Ice Tongue with remote sensing and altimetry data

AU - Wang, Xianwei

AU - Cheng, Xiao

AU - Gong, Peng

AU - Shum, C. K.

AU - M. Holland, David

AU - Li, Xiaowen

PY - 2014/3/25

Y1 - 2014/3/25

N2 - In February 2010, the Mertz Ice Tongue (MIT) collapsed and generated a giant iceberg. However, parameters about this iceberg have not been calculated and published in detail. In this study, the freeboard map of this iceberg was generated for the first time using a time-series ICESat/GLAS data. Methods for producing the freeboard map of this iceberg are suggested. Field data for ice velocity were used to relocate the footprints collected by different campaigns. Cross-validation was conducted with freeboards extracted from crossovers observed within 30days of each other. The precision of the freeboard extraction is approximately ±0.50m, when taking one standard deviation as the precision. The freeboard varied from 23m to 59m with the mean of 41m. With assumption of hydrostatic equilibrium (assuming a snow layer depth of 1m, a snow density of 360kg/m3, an ice density of 915kg/m3 and a sea water density of 1024kg/m3), the minimum, maximum and average ice thickness were calculated as 210m, 550m and 383m respectively. The total ice loss is approximately 8.96×1011tons over an area, 34km in width and 75km in length, or approximately 2560±5km2. These parameters extracted from remote sensing and altimetry data will provide additional information for studies of the evolution of iceberg, especially in iceberg tracking system.

AB - In February 2010, the Mertz Ice Tongue (MIT) collapsed and generated a giant iceberg. However, parameters about this iceberg have not been calculated and published in detail. In this study, the freeboard map of this iceberg was generated for the first time using a time-series ICESat/GLAS data. Methods for producing the freeboard map of this iceberg are suggested. Field data for ice velocity were used to relocate the footprints collected by different campaigns. Cross-validation was conducted with freeboards extracted from crossovers observed within 30days of each other. The precision of the freeboard extraction is approximately ±0.50m, when taking one standard deviation as the precision. The freeboard varied from 23m to 59m with the mean of 41m. With assumption of hydrostatic equilibrium (assuming a snow layer depth of 1m, a snow density of 360kg/m3, an ice density of 915kg/m3 and a sea water density of 1024kg/m3), the minimum, maximum and average ice thickness were calculated as 210m, 550m and 383m respectively. The total ice loss is approximately 8.96×1011tons over an area, 34km in width and 75km in length, or approximately 2560±5km2. These parameters extracted from remote sensing and altimetry data will provide additional information for studies of the evolution of iceberg, especially in iceberg tracking system.

KW - Freeboard

KW - Ice thickness

KW - ICESat

KW - Mertz Ice Tongue

KW - Remote sensing

UR - http://www.scopus.com/inward/record.url?scp=84893344424&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84893344424&partnerID=8YFLogxK

U2 - 10.1016/j.rse.2014.01.002

DO - 10.1016/j.rse.2014.01.002

M3 - Article

VL - 144

SP - 1

EP - 10

JO - Remote Sensing of Environment

JF - Remote Sensing of Environment

SN - 0034-4257

ER -