A data set containing passive acoustic data from microphones, geophones and hydrophones placed on a frozen lake for 1 week. The experiment was conducted in February of 2024 on Portage Lake in the Upper Peninsula of Michigan, USA.The primary passive data is structured in 1-minute HDF5 files, each containing 8 or 11 channels of ambient ice fracture time series data recorded at 52100 Hz sample rate. The sensors were placed on/below ice ~254mm thick over water ~600mm deep. The secondary data set contains HDF5 files of in a similar structure to the first data set, but contain active impact responses in an array of locations around each acoustic sensor. Active impacts were created with a force hammer at a pre-determined set of impact locations around each acoustic array.
Case, John; Brown, Daniel; Barnard, Andrew (2025). SWIFT-A: Shallow Water Ice Fracturing Tracking and Acoustics. World Data Center for Climate (WDCC) at DKRZ. https://doi.org/10.26050/WDCC/swifta
SQA - Scientific Quality Assurance 'approved by author'
Result Date
2025-06-27
Technical Quality Assurance (TQA)
TQA - Technical Quality Assurance 'approved by WDCC'
Description
1. Number of data sets is correct and > 0: passed;
2. Size of every data set is > 0: passed;
3. The data sets and corresponding metadata are accessible: passed;
4. The data sizes are controlled and correct: passed;
5. The temporal coverage description (metadata) is consistent to the data: passed;
6. The format is correct: passed;
7. Variable description and data are consistent: passed
Method
WDCC-TQA checklist
Method Description
Checks performed by WDCC. The list of TQA metrics are documented in the 'WDCC User Guide for Data Publication' Chapter 8.1.1