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Long term monitoring of Greenland's under ice environment

General

Project start
01.01.2013
Project end
31.12.2014
Type of project
ARMAP/NSF
Project theme
Cryosphere
Project topic
Cryosphere

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork location

Geolocation is 0, 0

Fieldwork start
02.07.2013
Fieldwork end
04.07.2013

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork location

Geolocation is 0, 0

Fieldwork start
02.07.2013
Fieldwork end
04.07.2013

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork location

Geolocation is 0, 0

Fieldwork start
02.07.2013
Fieldwork end
04.07.2013

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork location

Geolocation is 0, 0

Fieldwork start
29.06.2013
Fieldwork end
06.07.2013

SAR information

Fieldwork / Study

Fieldwork country
Greenland (DK)
Fieldwork location

Geolocation is 0, 0

Fieldwork start
28.06.2013
Fieldwork end
29.06.2013

SAR information

Project details

02.12.2019
Science / project plan

.

Science / project summary
The main goal of the NSF-funded project "Collaborative Research: Sublgacial controls on Greenland ice sheet marginal acceleration" (grant number 0909454, PI-Ginny Catania) was to quantify the nature of the subglacial drainage system in land-terminating ice regions of the Greenland Ice Sheet (GIS) through coupled borehole-surface geophysical studies. Several studies have noted the seasonal and daily velocity variations that are present throughout the ablation region of the GIS. This project was designed to collect data that monitors the melt signal on the surface of the ice sheet and measure the influence of this melt on ice motion. The original work included two field seasons in Greenland with three drill sites. Repeated occupation of drill sites allowed for instrument repair. Researchers successfully completed the first drill season in Greenland in the summer of 2011. This included the installation of multiple borehole instruments (water pressure sensors, thermistor cables, seismometers, strain gauges etc.) as well as surface instrumentation (weather stations, GPS, stream gauges, lake levels etc.). During the last scheduled visit in September 2012, researchers found that much of the borehole instrument was still operational and collecting valid science data. Given the cost of installing this equipment, they opted to leave the instrumentation running during the winter of 2012-13, with the understanding that our collaborating partner Tom Neumann, NASA-GSFC would solicit NASA for funding to complete the station removal in Summer 2013. With the approval of Cryosphere Program Manager Tom Wagner, researchers have established summer 2013 season objectives as the final removal of all existing instrumentation, and collect the longest-term records to date of the ice surface motion, internal ice temperature, and borehole water pressures from the base of the GIS.
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