Producción CyT
XI open science conference abstract book - Calving glaciers in Patagonia and the Antarctic Peninsula; common problems and future research strategies
Congreso
Autoría:
A. Rivera ; LENZANO, MARIA GABRIELA ; Lannutti, E ; LENZANO, MARIA GABRIELA ; Michal PetlickiFecha:
2024Editorial y Lugar de Edición:
SCAR libraryISSN:
9780948277696Resumen *
After Antarctica, the Patagonia Icefields (PI) are the largest ice mass in Southern Hemisphere. The main glaciers of the PI are calving into fjords or lakes, where local topography (especially the bathymetry), is playing an important role controlling glacier dynamics accelerating glacier retreats. Many of the Antarctic Peninsula glaciers are also calving into fjords and experiencing, in many cases, strong retreats. The glaciers in both regions share some characteristics, since they have very high snow accumulation rates, and in general, well-defined ice basins with a surrounding rugged topographies determining ice flows. In some other cases, the Peninsula’s glaciers are sharing a plateau similar to the biggest glaciers in the PI that are flowing from flat high altitude areas. Among the main differences between both regions are melting and ice velocities, both much higher in the PI. However, in response to climatic changes, especially the ongoing warming trends in the Peninsula, glacier melting is expected to increase. Modelling future glacier responses needs a much strong research especially nearby glacier fronts including bathymetric, dynamics and oceanographic/limnological studies. In recent years we have researched the ice-lake/fjords interactions in several Patagonian glaciers, including the western calving glaciers of the Northern Icefield, several freshwater calving glaciers in the eastern margin of Southern Patagonia Icefield and tidewater calving glaciers in Cordillera Darwin. Here we will present some of our results in Patagonia compared to changes experienced by calving glaciers in King George Island and the Antarctic Peninsula. The bathymetric data in front of the Peninsula’s glaciers are much more restricted than in Patagonia, but among the compared glaciers we have found a similar dependency on local bathymetries. Much more in situ data are needed for addressing the future evolution of these glaciers. A robust research strategy will be proposed for addressing these scientific problems. Información suministrada por el agente en SIGEVAPalabras Clave
patagonia Icefieldchangescalving glaciers