2022-2023 USAP Field Season
IRIS/PASSCAL: Erebus Backbone Network Project
Mr. Kent Anderson
Supporting Stations: McMurdo Station
The IRIS/PASSCAL Polar program has been tasked with the design, fabrication, and deployment of a near-real time backbone seismic network near the summit of Mount Erebus. This infrastructure will support the scientific and hazard monitoring objectives of the Office of Polar Programs (OPP) community and supplant the temporary Erebus Interim project. The IRIS Program for Array Seismic Studies of the Continental Lithosphere (PASSCAL) Instrument Center at New Mexico Tech supports cutting edge seismological research into Earth’s fundamental geological structure and processes and will use this expertise to install and maintain this network. The scope of this project does not include a directive for ongoing monitoring of the resulting data, but the data will be archived at the IRIS Data Management Center. This network will be comprised of five stations that each will include broadband, strong motion, and infrasound sensing capabilities. They will also be able to facilitate the expansion of other sensing capabilities.
Field Season Overview
Two PASSCAL engineers deployed under T-299-M will support the Erebus Backbone Network. They will service all existing high-elevation Erebus Interim Stations with routine maintenance and data downloads, including Lower Erebus Hut (ELHT), Hooper's Shoulder (HOO), Nausea Knob (NAUS), and Cone Z (CONZ). The team will also attempt to fully upgrade the HOO station by installing a new power system, a broadband seismometer, a new telemetry system, and infrasound and strong motion sensors. At ELHT, they will install a new power system and infrasound sensor.
The two engineers will install the new low-elevation Erebus Perimeter sites at Cape Royds (ROYD), Tracyte Hill (BIRD), and Terra Nova Nunatak (TER). For each site, they will install power systems and infrasound sensors. They will also install one broadband seismometer each at BIRD and TER, and two at ROYD.
Helicopters will support all work, and an ASC Field Safety Coordinator may accompany the team on visits to some sites. T-312-M will also ship the "Red Drill" to McMurdo via cargo vessel, to be received at the end of the season. The drill will overwinter and will be used for future upgrades at the sites in the following season.
Deploying Team Members