Greenland Surface Strain Rates & Stresses (greenlandstrainrate)
Project by group ghub
About
These datasets are 2D principal strain rates and principal stresses across the surface of the Greenland Ice Sheet.
We started with representative surface velocities over a 20-year period (Joughin et al., 2016). We smoothed the velocities with a 1 km × 1 km boxcar filter, which carries through many high-strain-rate features. We propagated errors in the velocity observations through this filter and then calculated the two horizontal principal strain rates by taking centered spatial derivatives of the smoothed velocities. We calculated the errors in these strain rates following basic error propagation principles.
Unfortunately, the text editor does not support equations. The equations for principal strain rates and their errors can be found as Equations 1-4 in Poinar & Andrews (2021), "Challenges in predicting Greenland supraglacial lake drainages at the regional scale", The Cryosphere, 15, 1455–1483, doi:10.5194/tc-15-1455-2021.
Finally, we also convert surface strain rates into surface stresses using Glen's flow law. See attachment pdf "Stresses from Strain Rates" for formulas.
References
Joughin, I., Smith, B. E., Howat, I., and Scambos, T. (2016). "MEaSUREs Multi-year Greenland Ice Sheet Velocity Mosaic, Version 1", NASA National Snow and Ice Data Center Distributed Active Archive Center, doi:10.5067/QUA5Q9SVMSJG. NSIDC-0670.
Poinar & Andrews (2021), "Challenges in predicting Greenland supraglacial lake drainages at the regional scale", The Cryosphere, 15, 1455–1483, doi:10.5194/tc-15-1455-2021.
Team
- Abani Patra
- Alan Aitken
- Alek Petty
- Alex Becerra
- Alexander Robinson
- Amy Steiker
- Andy Aschwanden
- Andy Dinh
- Anna Ruth Halberstadt
- Ash Narkevic
- Aurelien Quiquet
- Beata Maria Csatho
- Bette Otto-Bliesner
- Brandon L Graham
- Brandon L Graham
- Brooke Medley
- Caleb Kazunari Walcott
- Calvin Shackleton
- Carolyn Kay Weisman
- Chris Chambers
- Christophe Dumas
- Claire E Stirm
- Daan van Herpen
- Dan Lowry
- Daniel Martin
- David Porter
- Denis Felikson
- Donald Slater
- Dorothy K. Hall
- Eleanor Margo Byrne
- Elliot Snitzer
- Elliot Test
- Emma MacKie
- Eric Joseph Cicero
- Eric Larour
- Erika Simon
- Erin Pettit
- Fernando Perez
- Gabriel Cederberg
- George Lu
- Gunter Leguy
- Guy Paxman
- Heiko Goelzer
- Helene Seroussi
- Ian Joughin
- Ilya Shunko
- Isabel Nias
- Ivan Parmuzin
- Jacob Downs
- Jason Briner
- Joerg Schaefer
- Jonas Van Breedam
- Jonny Kingslake
- Joseph P Tulenko
- Justin Quinn
- Kate Thayer-Calder
- Kirsty Tinto
- Konstantin Latychev
- Konstanze Haubner
- Kristin Poinar
- Leigh Orf
- Lev Tarasov
- Lionel Favier
- Ludo Brucker
- Luke Trusel
- Marion McKenzie
- Martin Ruckamp
- Matt Trevers
- Matthew Hoffman
- Michael Studinger
- Michalea King
- Nicholas Holschuh
- Nicolas Jourdain
- Nicole Abib
- Nicole Keeney
- Nicole Schlegel
- Nicolo DiGirolamo
- Palak Patel
- Pascal Meunier
- Prashant Shekhar
- Ralf Greve
- Renette Jones-Ivey
- Richard Cullather
- Rinat Ibragimov
- Roger Cameron Creel
- Ronja Reese
- Rose Quinn
- Rupert Gladstone
- Sainan Sun
- Sébastien Le Clech
- Shane Grigsby
- Shivaprakash Muruganandham
- Sophie Goliber
- sophie nowicki
- Stephen Cornford
- Steven Clark
- Steven Price
- Sujay Sundar
- Tamsin Edwards
- Tasha Snow
- Thomas Kleiner
- Tim Hill
- Tong Zhang
- Tong Zhang
- Tore Hattermann
- Twila Moon
- Tyler Pelle
- Victoria Lee
- William Lipscomb
- Xylar Asay-Davis
- Youngmin Choi