HDF5 files containing impulse and responses for a series of force hammer impacts on the ice surface in locations around each acoustic array. Files are denoted with "_sync" for synchronous measurements, meaning the force hammer response was being recorded by the same data system as the acoustic sensors, or "_mag" for magnitude only measurements, meaning the force hammer was being recorded on a separate data system from the acoustic sensors. Each hammer impact location has a unique location ID. These locations are divided into 3 circles centered around each array. Locations A1-A8 are in a 3.05m radius around the microphone array, locations B1-B8 are in a 3.05m radius circle around the hydrophone array, location C1-C8 are in a 7.62m radius circle around the hydrophone array and locations D and E are in straight lines due southeast and southwest starting at the center of the hydrophone array.
Files are named according to the following conventions: ‘Letter_number.h5’ where the letter indicates which impact location grouping the data is from and the number indicates which location within the group. For example, file B3.h5 contains data from all acoustic sensors (4 microphones, 4 hydrophones and triaxial geophone) while location B3 was being impacted with the force hammer. Note that there are several files with an ‘_2’ after the file name (ex. A5_2.h5). This indicates that this is an additional run at the same location. Lastly, files with a ‘_nonSync’ after the file name (ex. D4_nonSync.h5) indicates that the file contains data that was collected with a force hammer that was not connected to the same data system as the acoustic sensors, leading to non-synchronous data. Files without ‘_nonSync’ at the end are synchronous, meaning that the force hammer was connected to the same data system as the acoustic sensors.