Recording the Full Seismic Wavefield

Full Wavefield Demonstration Community Experiment

Experiment Overview and Summary (October 2016)

Experiment Information & Application to Participate (April 2016)

Call for Concepts Q&A (Jan 3, 2016)

Call for Concepts (December 2015)

Existing Wavefields Datasets Available at the DMC

Motivation

Evolving technologies will allow the deployment of seismic arrays capable of recording well-sampled wavefields, reducing or eliminating aliasing. All bandwidths and all physical scales, from global to soils, can benefit from the recording of full wavefields, which allow measurement of otherwise undetectable signals and enable the use of full-wavefield imaging methods.

Figure 1: The lower-48 footprint of USArray seismic stations following completetion of the TA in October 2013.

Figure 2: Results of Nodal Seismic's Long Beach Survey.

Online Workshops

IRIS has hosted a series of online workshops to gather input from the broader seismological community about the potential scientific benefits of densely sampled full-wavefield seismic data. To record wavefields, we need practical facilities to deploy arrays at a variety of physical scales and temporal periods. The concept of the "Wavefields" effort is to produce a strong scientific case - not what we should build, but why we should build it – for every scale of application, built around the common physics of arrays and wavefields. The "Wavefields" effort is analogous to the "Science Plans" that have enunciated the goals of various community projects separate from the actual facility/program proposals.

To this end, the workshops are divided by application/scale and are intended together to be inclusive.  Discussion of each topic centers on the question: "What new science would be enabled by full-wavefield seismic data?"

Workshops - Categorized by Science Drivers

Science Drivers Materials Conveners
The Earthquake Source and Earthquake Hazards (4/21/14) Download (149.3 mb, zipped .mov) | Stream (audio/video sync issues) Greg Beroza
Jamie Steidl
Polar (6/24/14) Download (53.7 mb, zipped .mov) | Stream (audio/video sync issues) Rick Aster
Samantha Hansen
Global (8/22/14) Download (127.2 mb, zipped .mov) Chuck Ammon
Ved Lekic
Volcanoes (9/3/14) Download (107.7 mb, zipped .mov) Seth Moran
Rick Aster
Regional Broadband (9/8/14) Download (137.2 mb, zipped .mov) Rick Aster
Ved Lekic
Controlled Source and Industry Applications (9/12/14) Download (90.9 mb, zipped .mov) Katie Keranen
Alan Levander
Source Discrimination and Monitoring (9/17/14) Download (1.12 gb, .mov) Jessie Bonner
Brian Stump

Examples of Full Wavefield Analyses Using "Large N" Concepts