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2019 SCEC Community Geodetic Model Workshop

Applications Due: August 16, 2019
Participants: 30 maximum

Date: September 7, 2019
Time: 9:00am - 5:00pm
Location: Hilton Palm Springs Resort

SCEC Award: 19046

Conveners: Michael Floyd, Gareth Funning, David Sandwell, Susan Owen, and David Bekaert

SUMMARY: The most recent SCEC CGM workshop was held in March 2018 on future development of SCEC Community Geodetic Models (CGM). The goals of that workshop were as follows: (1) assess the current status of the CGM, including GNSS and InSAR products separately; (2) define key information needed to improve and/or develop the CGM, particularly the combination of GNSS and InSAR; (3) discuss how best to incorporate both formal uncertainties and differences between products into uncertainties associated with the final CGM products.

This full-day workshop, to be held in conjunction with the September 2019 SCEC Annual Meeting, will assess where current products stand relative to community needs, set goals and tasks for the upcoming year, and introduce the development of new product formats with a view to both ease of access to users as well as efficiency of storage for ever-increasing sizes of products. We will also address the response to and impact of the July 2019 Ridgecrest earthquakes on the CGM, using them as a case study in what pre-earthquake preparedness needs to be integrated into the CGM and how such products might be used by the community in response to future events. The tasks for the workshop are to reach consensus on the CGM Version 2 products, to be made available within the next six months, to refine and prioritize the identified action items, and to coordinate plans for submission of related SCEC 2020 proposals. The primary outcomes expected from the workshop are to develop a consensus for moving from a time-dependent to time-independent CGM over the next years, a set of recommendations for CGM products for earthquake preparedness and response of CGM mission, and plans for submission of coordinated and collaborative proposals in response to the 2020 SCEC RFP and other funding opportunities.

Presentation slides may be downloaded by clicking the links following the title. PLEASE NOTE: Files are the author’s property. They may contain unpublished or preliminary information and should only be used while viewing the talk.


08:30 - 09:00 Workshop Check-In  
Session 1: Current status of CGM products and research
09:00 Welcome and Overview of Workshop Objectives (PDF, 1.5MB) Mike Floyd
09:10 - 09:40 Collective discussion on current status of products and research All
09:20 - 09:30 Continuous GPS contribution to the CGM (PDF, 550KB) Tom Herring / Mike Floyd
09:30 - 09:40 Campaign GPS Data Processing for Integrated SCEC Community Geodetic Model Zheng-Kang Shen
09:40 - 09:50 Development and Dissemination of Standardized Geodetic Products by the Advanced Rapid Imaging and Analysis (ARIA) Center for Natural Hazards (PDF, 1.9MB) David Bekaert
09:50 - 10:40 Separate (GNSS and InSAR) breakout group discussions on steps required towards Version 2 of the CGM velocity products All
10:40 - 10:50 Break  
  Session 2: Next Steps for Version 2 of a Time-Independent CGM  
10:50 - 11:20 Reports from breakout groups  
11:20 - 12:30 “Hack-a-thon” for contributing members of the CGM and discussion among user members of ideal products and formats required for research All
12:30 - 13:30 Lunch  
  Session 3: Geodetic Response to the July 2019 Ridgecrest events and impact on the CGM  
13:30 - 14:00 Presentations on data collection and rapid product dissemination response  
13:40 - 13:50 Nevada Geodetic Lab: Ridgecrest Rapid Response (PDF, 778KB) Zachary Young
14:00 - 15:10 Discussion of useful data availability and products required in the event of future earthquakes to facilitate community response and rapid research All
14:15 - 14:25 Surface deformation of the 2019 Ridgecrest earthquake sequence (PDF, 1.6MB) Christopher Milliner
14:30 - 14:40 Mapping crustal deformation using ALOS-2 ScanSAR Zhen Liu
14:40 - 14:50 San Andreas InSAR Time-Series Xiaohua (Eric) Xu
15:10 - 15:20 Break  
  Session 4: Future Steps Towards a Time-Dependent CGM  
15:20 - 16:30 Discussion: How we develop from velocities to time series? All
16:30 - 17:00 Discussion: Workshop Recommendations and Future Plans All
17:00 Workshop Adjourns  

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This workshop is held prior to the 2019 SCEC Annual Meeting.