INSTRUMENTATION for POLENET
GPS systems
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How GPS works:
Satellites orbiting the earth send out a signal that is received by a GPS antenna and recorded in a GPS receiver. The GPS receiver compares the time a signal is transmitted by a satellite with the time it is recieved. This time difference tells the receiver how far away the satellite is. With enough measurements from different satellites, a position can be determined.
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What do we measure with GPS:
We measure how the earth's crust moves. This movement is in response to a variety of sources including tectonic forces and ice unloading.
Seismic systems
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View this IRIS (Incorporated Research Institutions for Seismology) handout on how a seismograph works!
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How seismic sensors work:
Seismometers detect ground motion by recording the size and force of seismic waves, or waves that travel through the Earth.
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What do we measure with seismic sensors
We look at seismic waves resulting from tectonic earthquakes to study the strength of the solid Earth
Power and Communication Systems
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Who develops and supplies the power and communication systems?
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Two NSF funded facilities are working with POLENET scientists to develop instrument systems to meet the special needs of the POLENET project.
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Learn more about the efforts to develop power and communication systems for autonomous geophysical systems in polar environments.
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Learn more about the efforts to develop power and communication systems for autonomous geophysical systems in polar environments.
