Two Vertical Seismic Profiles from RESPONDER acquisitions on Store Glacier, Greenland, July 2019
Two VSP datasets, acquired in July 2019 using a Silixa iDAS TM distributed acoustic sensing system. Fibre-optic cable is installed in a vertical borehole, 1043 m deep, on Store Glacier, a fast-flowing outlet of the Greenland Ice Sheet. The survey site ( L028 ) is the drained bed of a supraglacial la...
| Main Authors: | , , , , , , , , |
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| Format: | Dataset |
| Language: | unknown |
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figshare
2020
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| Subjects: | |
| Online Access: | https://dx.doi.org/10.6084/m9.figshare.12410390.v1 https://figshare.com/articles/dataset/Two_Vertical_Seismic_Profiles_from_RESPONDER_acquisitions_on_Store_Glacier_Greenland_July_2019/12410390/1 |
| Summary: | Two VSP datasets, acquired in July 2019 using a Silixa iDAS TM distributed acoustic sensing system. Fibre-optic cable is installed in a vertical borehole, 1043 m deep, on Store Glacier, a fast-flowing outlet of the Greenland Ice Sheet. The survey site ( L028 ) is the drained bed of a supraglacial lake, located at [70.56793°N, 50.08697°W]. The seismic source for both shots is a 7 kg sledgehammer, striking a small polyethylene impact plate. For the zero-offset shot (' RESPONDER_Jul2019_L028_ZO.sgy '), the source is located directly at the borehole top. For the offset-shot (' RESPONDER_Jul2019_L028_300mSouth.sgy '), the source is located 306.4 m south of the borehole top. Seismic VSP data are sampled every 1 m along the length of the cable. The gauge length of the iDAS TM interrogator is 10 m. The time-sampling frequency of the VSP is 4000 Hz. The first trace in the VSP is located at 0 m depth. The VSPs are stacks of ~25 individual shots, and a 20-40-250-500 Hz Ormsby bandpass filter is applied. The analysis of these data is documented by the authors in the Geophysical Research Letters article " Distributed Acoustic Sensing (DAS) of Seismic Properties in A Borehole drilled on a Fast-Flowing Greenlandic Outlet Glacier ". |
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