1 / 20

Kenny Matsuoka and Frank Pattyn

Call for international/interdisciplinary collaborations on ”ice rise archipelago” in Dronning Maud Land. Kenny Matsuoka and Frank Pattyn. 大変申し訳ございません. EAIS is more vulnerable to external forcing than recoginized previously. Miles et al. (2013, Nature). Identity of Dronning Maud Land .

hedwig
Download Presentation

Kenny Matsuoka and Frank Pattyn

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Call forinternational/interdisciplinary collaborations on ”ice rise archipelago”in Dronning Maud Land Kenny Matsuoka and Frank Pattyn

  2. 大変申し訳ございません

  3. EAIS is more vulnerable to externalforcingthanrecoginizedpreviously Miles et al. (2013, Nature)

  4. Identityof Dronning Maud Land • Narrowcontinental shelf • Chainsofhalf-coupled(?)iceshelvesover > 1500 km • Marine-terminatingglaciers • Ice-risearchipelago

  5. Narrowcontinental shelf Short pathlength from abyssal plains IBCSO version 1.0 bathymetrychart (Arndt et al., 2013, GRL)

  6. Adjacenticeshelvesare not identical Rignot et al. (2013, Science)

  7. Marine-terminatingglaciers Flow speed (color) + Grounding line (whitecurve)

  8. Risk factor for rapid changes Regions withoutletglaciersfeedingintoiceshelvesdominateAntarctic-widemassbalance Antarcticmassbalancebetween 1992-2006: Rignot et al. (2008)

  9. Collapseof Larsen B Ice Shelf Jan 31, 2002 Feb 17, 2002 Feb 23, 2002 March 5, 2002 50 km National Snow and Ice Data Center (NSIDC)

  10. It triggeredice-sheetmass deficit Scambos et al. (2004, GRL)

  11. What will happen next? Larsen A (1995) Gipps Ice Rise Larsen B (2002)

  12. Critical roles of ice rises Current ice-shelf flow speed Flow speeds increase due to ice-rise loss (modeled) Borstad et al. (2013) The CryosphereDiscussion

  13. DML: Ice rise archipelago MODIS satellite images

  14. Manyice rises are marine based Matsuoka et al. (in prep)

  15. Ice rises modulateoceancirculation Hattermann et al. (Ocean Modelling, in review)

  16. Ice rise ”system” science • Glaciology • Climatology • Oceanography • Sedimentology

  17. SCAR/CliC/APECS-fundedWorkshoponIce Rises in Tromsø 26-29 August, 2013

  18. We are neighbors in Antarctica 500 km Color: iceflow speed, Contours: surfaceelevation

  19. Take-homemessages

  20. ご清聴ありがとうございました

More Related