Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Laurence Gray"'
Autor:
Laurence Gray, Benoît Lauzon, Luke Copland, Wesley VanWychen, Christine Dow, Will Kochtitzky, Karen E. Alley
Publikováno v:
Geophysical Research Letters, Vol 51, Iss 19, Pp n/a-n/a (2024)
Abstract We use digital elevation models (DEMs) and ICESat‐2 data to study the filling and outflow from a large subglacial lake under Manson Icefield in the Canadian Arctic. When full, the lake is ∼17 × 3 km with an area of 52 km2. Early in 2021
Externí odkaz:
https://doaj.org/article/45b3f97eee6e48e2a4b8a779cd5e662c
Publikováno v:
Arctic Science, Vol 8, Iss 4, Pp 1288-1304 (2022)
Here we use a variety of remote sensing data sets to characterize the evolving extent, surface features, dynamics, and surface elevations of Split Lake Glacier, a small outlet of the Prince of Wales Icefield, Nunavut. The glacier started advancing be
Externí odkaz:
https://doaj.org/article/5ea57a0e33d2472aa7b45bcdf353b226
Autor:
Wesley Van Wychen, David Burgess, Will Kochtitzky, Natalija Nikolic, Luke Copland, Laurence Gray
Publikováno v:
Canadian Journal of Remote Sensing, Vol 46, Iss 6, Pp 695-714 (2020)
RADARSAT-2 imagery collected each winter from 2015/2016 to 2019/2020 is used to quantify and characterize the variability in the motion of, and the discharge from, the major marine-terminating ice masses of the Queen Elizabeth Islands (QEI: Devon, El
Externí odkaz:
https://doaj.org/article/026f3eeb37a3493db98368dd7b84f6e4
Publikováno v:
Canadian Journal of Remote Sensing, Vol 44, Iss 1, Pp 57-66 (2018)
Speckle-tracking of historically acquired ALOS PALSAR and RADARSAT-2 datasets are used to determine the dynamics of major glaciers and ice masses in western Canada over the past decade. For the icefields of the St. Elias Mountains and those that frin
Externí odkaz:
https://doaj.org/article/049417d7241840dfaadbec4be5d00d9f
Autor:
WESLEY VAN WYCHEN, JAMIE DAVIS, LUKE COPLAND, DAVID O. BURGESS, LAURENCE GRAY, MARTIN SHARP, JULIAN A. DOWDESWELL, TOBY J. BENHAM
Publikováno v:
Journal of Glaciology, Vol 63, Pp 436-449 (2017)
Feature tracking of approximately annually separated Landsat-7 ETM+ imagery acquired from 1999 to 2010 and speckle tracking of 24-day separated RADARSAT-2 imagery acquired from 2009 to 2015 reveal that motion of the major tidewater glaciers of Devon
Externí odkaz:
https://doaj.org/article/edc9c405bbe24cfbb87a42c261045e64
Autor:
Laurence Gray, David Burgess, Luke Copland, Kirsty Langley, Prasad Gogineni, John Paden, Carl Leuschen, Dirk van As, Robert Fausto, Ian Joughin, Ben Smith
Publikováno v:
Frontiers in Earth Science, Vol 7 (2019)
Ice loss measurements around the periphery of the Greenland Ice Sheet can provide key information on the response to climate change. Here we use the excellent spatial and temporal coverage provided by the European Space Agency (ESA) CryoSat satellite
Externí odkaz:
https://doaj.org/article/f0e5d80c96204207b68740b33a649209
Autor:
Louise Sandberg Sørensen, Sebastian B. Simonsen, Kirsty Langley, Laurence Gray, Veit Helm, Johan Nilsson, Lars Stenseng, Henriette Skourup, René Forsberg, Malcolm W. J. Davidson
Publikováno v:
Remote Sensing, Vol 10, Iss 9, p 1354 (2018)
The study presented here is focused on the assessment of surface elevations derived from CryoSat-2 SARIn level 1b data over the Austfonna ice cap, Svalbard, in 2016. The processing chain that must be applied to the CryoSat-2 waveforms to derive heigh
Externí odkaz:
https://doaj.org/article/1a6d8e21016a440ba603d7077daf268c
Publikováno v:
Remote Sensing, Vol 8, Iss 9, p 785 (2016)
Glacier dynamics play an important role in the mass balance of many glaciers, ice caps and ice sheets. In this study we exploit Radarsat-2 (RS-2) Wide Fine (WF) data to determine the surface speed of Svalbard glaciers in the winters of 2012/2013 and
Externí odkaz:
https://doaj.org/article/191ed7ecd3ec4aec952e29f31653bcb0
Autor:
Laurence Gray, David Burgess, Luke Copland, Christine Dow, Xavier Fettweis, David Fisher, Will Kochtitzky, Wesley van Wychen, James Zheng
Publikováno v:
Journal of Glaciology, Pp 1-11
Surface height changes above three previously undetected subglacial lakes in northeastern Greenland are documented using CryoSat, DEMs and ICESat-2. Between 7 February and 6 March 2012, the central ice region (22.6 km2) above the largest lake dropped
Externí odkaz:
https://doaj.org/article/d1bec87adbbc44fa8eef2ec7ef3b6cf1
Publikováno v:
Archives of disease in childhood. Education and practice edition.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0daeb5ed07d2662660933c4392d5841a
https://pubmed.ncbi.nlm.nih.gov/36600476
https://pubmed.ncbi.nlm.nih.gov/36600476