This Finnegan_README_20200422.txt file was generated on [20210420] by Riley Finnegan and modified on [20200422] by Brandon Patterson. Links to Publication Field updated 20211209 TK ------------------- GENERAL INFORMATION ------------------- 1. Title of Dataset Data for: Vibration of Natural Rock Arches and Towers Excited by Helicopter-Sourced Infrasound 2. Author Information Principal Investigator Contact Information Name: Jeffrey R. Moore Institution: University of Utah Address: Department of Geology and Geophysics, 115 S 1460 E, Room 383, Salt Lake City, UT 84112 Email: jeff.moore@utah.edu Associate or Co-investigator Contact Information Name: Riley Finnegan Institution: University of Utah Address: Department of Geology and Geophysics, 115 S 1460 E, Room 383, Salt Lake City, UT 84112 Email: riley.finnegan@utah.edu Name: Paul R. Geimer Institution: University of Utah Address: Department of Geology and Geophysics, 115 S 1460 E, Room 383, Salt Lake City, UT 84112 Email: paul.geimer@utah.edu 3. Date of data collection (single date, range, approximate date): 2017-2019 4. Geographic location of data collection (where was data collected?): Southern Utah 5. Information about funding sources that supported the collection of the data: Data collection was funded by the National Science Foundation grant EAR-1831283, the University of Utah Vice President for Research, and by the Utah Science Technology and Research Initiative. -------------------------- SHARING/ACCESS INFORMATION -------------------------- 1. Licenses/restrictions placed on the data: Please acknowledge the use of these data in any publications. These data are provided as-is without any express or implied warranties whatsoever. 2. Links to publications that cite or use the data: Finnegan, R., Moore, J.R., & Geimer, P.R. (2021). Vibration of Natural Rock Arches and Towers Excited by Helicopter-Sourced Infrasound. Earth Surface Dynamics. https://doi.org/10.5194/esurf-9-1459-2021 3. Links to other publicly accessible locations of the data: N/A 4. Links/relationships to ancillary data sets: N/A 5. Was data derived from another source? No 6. Recommended citation for the data: Finnegan, R., Moore, J.R., & Geimer, P.R. (2021). Data for "Vibration of Natural Rock Arches and Towers Excited by Helicopter-Sourced Infrasound". The Hive: University of Utah Research Data Repository. --------------------- DATA & FILE OVERVIEW --------------------- Each folder contains data for a single site, and includes time-series vibration data of the landform(s) and nearby ground, time-series infrasound data, a 3D model of the site, dimensions of the landform(s), a field sketch of instrument layout, GPS data from the helicopter, pole-zero file(s) for removing instrument response, and a text file with instrument type, sampling rate, and UTC time information. 1. File List A. Filename: [STATIONNAME].mseed Short description: Vibration time series data at location of station shown in [SiteName]_FieldSketch.jpg. The notes.txt file describes the time period of recording, instrument type, and sampling rate (data have been downsampled to 100-250 Hz). B. Filename: [SiteName]_Infrasound.mseed Short description: Infrasound time series data measured at location of channel shown in [SiteName]_FieldSketch.jpg. The notes.txt file describes the time period of recording and sampling rate. C. Filename: [SiteName]_Model.stl Short description: Photogrammetry 3D model of the landform or site used for finite element analysis. D. Filename: [SiteName]_Dimensions.jpg Short description: Dimensions of the studied landform(s). E. Filename: [SiteName]_FieldSketch.jpg Short description: Overhead diagram of field equipment layout at the site. F. Filename: [SiteName]_HeliGPS.gpx Short description: GPS track of helicopter at each site. The helicopter's position is recorded every second at Two Bridge and at other sites, the sampling rate varies in relation to helicopter speed. G. Filename: [instrument].vel.pz Short description: Pole-zero file corresponding to 20 s Trillium Compact broadband seismometer or 5 Hz Fairfield nodal geophone for instrument response removal. H. Filename: notes.txt Short description: Text file listing instrument type, filename, UTC time of recording and any data gaps, and the sampling rate. 2. Relationship between files: Files within each folder are all related to the site given by the folder name. 3. Additional related data collected that was not included in the current data package: N/A 4. Are there multiple versions of the dataset? No -------------------------- METHODOLOGICAL INFORMATION -------------------------- 1. Description of methods used for collection/generation of data: We collected vibration data with seismometers and nodal geophones and deployed them following methods outlined in Moore et al. (2016) and Geimer et al. (2020). We placed seismometers and nodal geophones directly onto the landforms and nearby ground to record the vibrations. We used infraBSU microphones (Marcillo et al., 2012) to record infrasound and laid out the microphones in a linear array. We used a handheld GPS aboard the helicopter to record its position during the flights. Moore et al. (2016): "Anthropogenic sources stimulate resonance of a natural rock bridge" doi.org/10.1002/2016GL070088 Geimer et al. (2020): "Sparse Ambient Resonance Measurements Reveal Dynamic Properties of Freestanding Rock Arches" doi.org/10.1029/2020GL087239 Marcillo et al. (2012): "Implementation, Characterization, and Evaluation of an Inexpensive Low-Power Low-Noise Infrasound Sensor Based on a Micromachined Differential Pressure Transducer and a Mechanical Filter" doi.org/10.1175/JTECH-D-11-00101.1 2. Methods for processing the data: The vibration and infrasound data are submitted in its raw form, with amplitudes given in counts representing velocities and pressure, respectively. We used the pole-zero files to remove the instrument response to convert the vibration data to m/s. For the infrasound data, we convert to Pa by multiplying the data by 8.744E-5 Pa/count. The infraBSU microphones have a flat response over the 0.038 Hz corner frequency and a sensitivity of 4.5E-5 V/Pa. We created 3D models from photosets taken at each study site which we then used for finite element analysis. 3. Instrument- or software-specific information needed to interpret the data: We used ObsPy to process all time series data. We generated the 3D models using Bentley Context Capture and Meshmixer, and performed finite element analysis in COMSOL Multiphysics. 4. Standards and calibration information, if appropriate: N/A 5. Environmental/experimental conditions: N/A 6. Describe any quality-assurance procedures performed on the data: N/A 7. People involved with sample collection, processing, analysis and/or submission: Riley Finnegan, Paul R. Geimer, Jeffrey R. Moore, Erin Bessette-Kirton, Cynthia Gardner, Ammon Hatch, Holly Hurtado, Brendon Quirk, Anna Stanczyk, Kathryn Vollinger, and Holly Walker deployed instruments at various sites and provided general field assistance. Riley Finnegan, Jeffrey R. Moore, and Paul R. Geimer processed and analyzed the data.