IGS Chamonix 2014 – part 3

And here comes the last part of my summary of the IGS Chamonix 2014 Symposium.

Day 5 – 30 May 2014

After an excellent banquet, tiredness and a lot various talk are on the program of the last day of the conference. And some sun too 😉

Glacier des Bossons
Glacier des Bossons

The keynote of the day is given by Terry Wilson about the GPS/Seismograph network deployed in Antarctica to evaluate the Glacial Isostatic Adjustment (GIA).

In the second session of the morning, Neal Iverson presented some glacial geomorphological features left by the Laurentide Ice Sheet at the Des Moines Lobe (Idaho, USA).  Using mechanic tests on tills, magnetic analysis and high-resolution Lidar, those features are identified as crevasses-squeeze ridges and so change the interpretation of the retreat rate of the Des Moines Lobe. Really interesting talk, especially for those who are glacial geomorphologist!

In the same session, Mac Cathles talked about glacial earthquakes as a way to measure calving events. He used a physical model (water tank and plastic block) to determine the aspect of the seismic signal. Really cool, sure Dr. Lucy Clarke from the BSG (British Society for Geomorphology) would like it 😛

After the lunch, Tavi Murray presented the work of her group on Helheim Glacier in Greenland. Interesting but now there is a lot of (GPS) pollution in front of this glacier.

Tavy Murray talk
Tavi Murray talk

For the last session (there was still a lot of participants), we got a surprising talk on mountain glacier flow modelling in a special context: finding where corpses were buried on the Aletsch Glacier. Guillaume Jouvet told us an interesting story: you can find more detail in his paper (doi:10.3189/2014JoG13J156).

And finally Erin Pettit presented her work on the Antarctic Peninsula which present an East/West divide due to orographic precipitation and the acceleration of the SCAR inlet Ice Shelf.

Erin Pettit talk
Erin Pettit talk

The acronym of the day was LVIS for Land, Vegetation, and Ice Sensor (a.k.a. the Laser Vegetation Imaging Sensor). A rocking name to finish 😛

THE END

Glacier des Bossons at the sunset
Glacier des Bossons at the sunset

My conclusions

That’s it: the conference is over and everybody is going home. That was a pretty intensive and interesting conference. I talked to everyone I wish to talk to, so “mission completed”!

Just two quick remarks on modelling:

  • Model in input of model validated by other model… Start to sound a bit sketchy, isn’t it? So ok, fine, RACMO climate model looks pretty solid but some field data would help to be more credible.
  • Can one glacier/ice model solve all problems and be certain at 100%? Looks like that if you believe Elmer/Ice model users who gave no uncertainties or accuracy on their results…

I found during this conference the implications of using a digital model (climate, glacier, ice sheet) were taken too lightly in comparison of the results produced.

Anyway, the IGS Chamonix 2014 Symposium was really a great conference for me: broadening my vision of glaciology and talking to a lot of interesting people!

Thank you IGS and all participants!

Ps: I found a great shop in Chamonix 😛

Ice & Rock Shop
Ice & Rock Shop

Ps bis: I like Time Lapse photography, here is one of the view of my room 😉