2018 NSF Large Scale Experiment Workshop on Volcanic Blasts

A collection of datasets which were recorded at the 2018 NSF Large Scale Experiment Multiblast workshop on volcanic hazards. The workshop aimed to facilitate interdisciplinary collaboration and improve field-scale testing of monitoring methods and models. The workshop had 47 participants from US-based and international institutions. Read some more details in this EOS article or a full manuscript which is currently in review.

attention: This dataset is UNDER CONSTRUCTION. It is close to, but not absolutely complete. We will publish version 1.0 once the accompanying JGR manuscript has been approved for publication.

All data is provided in several zip archives, and small files containing metadata and descriptions. Large data chunks are separated into 'pads' (1–4), which refer to the four experiments that were performed. The archives contain a folder structure, which should allow for compatible extractions, so that archives can be downloaded to a common local folder (e.g. using a script) and extracted there without running into file name conflicts.

Several teams collaborated to come up with this dataset. Below we list the teams from which data was used and is part of the current version of the dataset. More data may be published in the future and added in a later version. The teams collaborated to varying degrees for different tasks.

Teams in alphabetical order:

• BYU
  Brigham Young University
  Lead by Neilsen
  Contributors: TODO
• INGV
  Istituto Nazionale di Geofisica e Vulcanologia, Rome
  Lead by Taddeucci
• LDEO
  Lamont Doherty Earth Observatory, Columbia University
  Lead by Lev, Oppenheimer
• MTU
  Michigan Tech University
  Lead by Waite
  Contributors: TODO
• UB
  University at Buffalo
  Lead by Sonder, Valentine
  Contributors: David Hyman, Kayley DiemKaye, Norman Yu
• UCSB
  University of California Santa Barbara
  Lead by Matoza
  Contributors: Sean Maher, Richard Sanderson
• UMKC
  University of Missouri, Kansas City
  Lead by Graettinger
  Contributors: Kadie Bennis
• Yamagata
  Yamagata University
  Lead by Kae Tsunematsu

Parts of This Dataset

• Coordinates & Positions:
  Lead by the UB team.
  Coordinates and Locations of Blast Charges, Sensors etc.

• Elevation Data of Craters:
  Lead by the UMKC and LDEO teams (Graettinger, Lev).
  Elevation data were created from photographs taken right after charge detonations. The 3D-data was derived in a standard photogrammetry software (Metashape™). This data was then rasterized and imported into ArcGIS™, and is provided here. Fine adjustments were made to better match reference locations of the available site coordinate system.

• Ejecta Data:
  Lead by the UMKC team.
  Spatial distribution of ejected material.
  The .csv files contain the same information as the Excel sheet, but do not contain any graphs.

• Airborne Pressure Data:
  Lead by the BYU team.
  Archive files: buy_pad[i].zip.
  Data is arranged in four zip-archives, one for each blast sequence ("Pad"). Each file contains time and pressure arrays and some metadata of one microphone channel. Individual sensor locations are in the positions.zip.

  • Format: Matlab .mat
  • File name patterns after unpacking:
    data/BYU Acoustics/Data/Aligned with Infra peaks/Pad [i]/TimeSyncPad[i]Ch[k].mat
[i]: Pad number (1 ... 4)
    [k]: Channel number.

• Seismo-Acoustic Data:
  Lead by two teams, UCSB and MTU, who deployed horizontally distributed (UCSB) and vertically distributed (MTU) seismometer stations, and infrasound sensors. MTU also provided a geophone chain. Some of the UCSB sensors were combined with the rapid BYU provided microphones to record a very wide frequency spectrum in ground and atmosphere.

  • UCSB data structure:
    Data archives are provided in sensor groups for all experiments (pads). Archive file names are ucsb_[sensor_type]_[sensor_gid].zip. [sensor_type] is one of inf or seis. [sensor_gid] is an identifier for the sensor group (may also be a single sensor) the archive contains. E.g. inf_nyi1 contains infrasound data of sensors NYI1.1, NYI1.2 and NYI1.3. Use the preview window above to look into the archives. The position archive contains the sensor locations.

  • MTU data structure:
    Data archives (mtu_seis-infr_pad[i].zip) are organized in 'pads' 1 ... 4 and contain all sensors (infrasound, seismometer, geophones).

• Video Material:
  No leading team here. Cameras were contributed teams by INGV, LDEO, Yamagata, UB.
  A drone was deployed for a map-view. Six or more cameras for each pad. Read the video_readme.pdf for details about camera locations and types.

Changes

• v0.2: (this version)
  Second batch of main data. >90% complete, I guess.
• v0.1:
  First batch of main data.