Greenland Magnetometer Array

PI Institute/Department Email
Behlke, Rico
Technical University of Denmark, National Space Institute
Award#(s)
MagnetometerDTU
Funding Agency
DK\Research/Higher Ed\DTU\DNSC
Program Manager Funding Agency Email
Mercer, Dr. Jennifer
NSF, Office of Polar Programs
Discipline(s)
Space Physics
Science Summary

The project plans to install a magnetometer at Summit Station to investigate geomagnetic variations in Central Greenland in support of two projects with complementary scientific aims: (1) Project IceBase is a high altitude geomagnetic survey to be proposed by a consortium around Goddard Space Flight Center to NASA to investigate the geothermal heat flux below the Greenland ice cap. The project aims at producing a Greenland-wide map of magnetic crust depth (Curie-depth), indicative for geothermal heat flux. The derived heat flux map is a boundary condition for ice sheet models to improve, among other things, estimates for global sea level rise due to melting of the Greenland ice sheet. Ground magnetometers are critical when correcting the survey data for natural geomagnetic time variations. Data from Summit Station, due to its location in Central Greenland, in combination with the below mentioned array, is crucial here. (2) The Greenland Magnetometer Array operated by DTU Space is a permanent array of some 15 magnetometer stations located on the Greenland East and West Coasts. The array is ideal for investigating the polar ionospheric current systems and processes related to the coupling of energy and momentum from the solar wind to the magnetosphere and ionosphere. Data is interpreted in combination with satellite data (e.g. NASA's Themis mission, ESA's Cluster mission), or with conjugate stations from Antarctica. The proposed Summit magnetometer experiment will, apart from improved geographical coverage, provide data from the electrically insulating ice cap. This data will be less affected by induced electric currents in surrounding oceans and underlying bedrock than the coastal stations, thus improving the scientific value of the array data as a whole.

Logistics Summary

Participants in this Danish Technical University (DTU)-funded project will install and collect data from a magnetometer at Summit Station to investigate geomagnetic variations in Central Greenland. The funding period for this grant begins in 2014 and ends in 2020. This work will support two complementary scientific objectives: (1) Project IceBase is a high altitude geomagnetic survey to be proposed by a consortium around Goddard Space Flight Center to NASA to investigate the geothermal heat flux below the Greenland ice cap. The project aims at producing a Greenland-wide map of magnetic crust depth (Curie-depth), indicative for geothermal heat flux. The derived heat flux map is a boundary condition for ice sheet models to improve, among other things, estimates for global sea level rise due to melting of the Greenland ice sheet. Ground magnetometers are critical when correcting the survey data for natural geomagnetic time variations. Due to its location in Central Greenland, data from Summit, in combination with the below mentioned array, is crucial to this objective. (2) The Greenland Magnetometer Array operated by DTU Space is a permanent array of some 15 magnetometer stations located on the Greenland east and west coasts. The array is ideal for investigating the polar ionospheric current systems and processes related to the coupling of energy and momentum from the solar wind to the magnetosphere and ionosphere. Data is interpreted in combination with satellite data (e.g. NASA's Themis mission, ESA's Cluster mission), or with conjugate stations from Antarctica. In addition to improved geographical coverage, the Summit magnetometer experiment will provide data from the electrically insulating ice cap. This data will be less affected by induced electric currents in surrounding oceans and underlying bedrock than the coastal stations, thus improving the scientific value of the array data as a whole. From 2014 to 2020, project personnel may visit Summit Station to maintain or upgrade the magnetometer installation. CPS science technicians will monitor and maintain the magnetometer, electronics, and datalogger year-round. In 2014, two people will visit Summit in June on project business. The science group will not deployment to Summit during 2015, 2016 and 2017. The experiment will continue to be maintained by onsite technicians. In 2015 the Lead PI switched from Dr. Jurgen Matzka to Dr. Rico Behlke at which time the grant name was changed from MatzkaDTU to MagnetometerDTU in this database.

CPS will provide Air National Guard support for cargo and passengers between Kangerlussuaq and Summit Station, Summit user days, fuel from Summit stocks, and science tech/labor support for the project. NSF will recoup costs associated with this support directly from DTU. All other items, including KISS user days, will be arranged and paid for by the PI.

Season Field Site Date In Date Out #People
2014
Greenland - Summit
2
2015
Greenland - Summit
0
2016
Greenland - Summit
0
2017
Greenland - Summit
0
2018
Greenland - Summit
1
2019
Greenland - Summit
1
2020
Greenland - Summit
1