David J. Wald

David Jay Wald (born May 6, 1962 Greenwich, Connecticut)[1] is a seismologist with the U.S. Geological Survey (USGS) at the National Earthquake Information Center (NEIC) in Golden, Colorado.[2] He is an affiliated faculty member at the Colorado School of Mines,[3] and served as the editor-in-chief of the Earthquake Engineering Research Institute's (EERI) journal, Earthquake Spectra, from 2018–2022.[4][5] He also served on the Southern California Earthquake Center Science Planning Committee, 2014–2020.[6]

David J. "Dave" Wald
Born
David Jay Wald

May 6, 1962
Greenwich, Connecticut
Known for
Board member of
SpouseLisa Wald
Academic background
Education
Websiteusgs.gov/staff-profiles/david-j-wald

Wald is involved in the research, development, and operations of real-time information systems at the USGS National Earthquake Information Center.[7] He has developed and manages products such as ShakeMap and the community-science system Did You Feel It?. He is also responsible for developing other systems for post-earthquake response and pre-earthquake mitigation, such as ShakeCast and PAGER.[8] He has also contributed to the USGS Ground Failure product.[9][10] As well as management of these systems, Wald's research also focuses on characterization of rupture processes from complex earthquakes, analysis of ground motions and site effects, and modeling earthquake-induced events.[11]

On top of his publications, Wald is also known for hosting events and giving lectures about geophysics topics, including a "Provost’s Lecture" at Stony Brook University[12] and an EERI Younger Members Committee webinar.[13]

Education

Wald received his B.S. in Geology and Physics from St. Lawrence University in 1984. He then completed his M.S. in Geophysics from the University of Arizona in 1986.[8] He worked in Pasadena, California for Woodward-Clyde Consultants from 1986–1988 on seismic hazard assessments for the Diablo Canyon Power Plant.[14] David went on to the California Institute of Technology (Caltech) in Pasadena and was awarded his Ph.D. in Geophysics in 1993.[14]

Wald then began working at the USGS in Pasadena in 1993 as a National Research Council Post-Doctoral Fellow and stayed on there as a researcher. He and his wife, Lisa Wald,[15] who also works for the USGS,[16] later transferred to the Golden, Colorado USGS office to work at the NEIC.[14]

Products

Wald was a developer of PAGER, a post-earthquake analytic system. He is also the primary developer and distributor of ShakeMap.[17] Other products of note developed or managed by Wald include:

Did You Feel It?
Did You Feel It? civilian responses to the 2023 Turkey earthquake.

For Did You Feel It? (DYFI),[18] Wald leveraged the work of Lori Dengler and Jim Dewey following the Northridge earthquake. Their large volume of macroseismic phone surveys motivated them to create a "community decimal intensity" by assigning numerical values to individual questionnaire responses that they could calibrate against the Modified Mercalli Intensity scale, the macroseismic intensity scale in use in the U.S. The numerical assignment of intensities from questionnaires lent itself naturally to automating the entire process of data collection, intensity assignment, and publishing via the internet, which today creates community-sourced maps of perceived intensity after an earthquake.[19]

DYFI has been operating for over two decades (1999–present)[20] in the U.S. and over 18 years globally. The survey has collected over 6 million individual DYFI intensity reports during that period. DYFI allows for high rates and quantities of macroseismic data collection. High-quality MMI maps can be made almost immediately with complete coverage at a higher resolution than in the past.[21]

ShakeCast

In and around 2000, via contacts with the Caltech ERA, Wald began interacting with many utility and lifeline operators. A common query was, "Given a ShakeMap, how can I tell what the level of shaking was at each of my facilities?” Working initially with Phil Naecker, an IT and infrastructure consultant, and with support from Loren Turner of the California Department of Transportation (Caltrans), David's team prototyped ShakeCast—short for ShakeMap Broadcast. ShakeCast was developed as a post-earthquake situational awareness application that automatically retrieves earthquake shaking data from ShakeMap to compare ground shaking intensity measures against a user’s facilities.[22]

ShakeCast is now a fully automated software system for delivering specific ShakeMap products to critical users and triggering established post-earthquake response protocols. ShakeCast generates potential damage assessments and inspection priority notifications, maps, and web-based products for critical users, emergency managers, and anyone specified on a need-to-know basis.[23][24]

Honors

Research output

As per Scopus, Wald has over 11 thousand citations and an h-index of 50,[33] whereas according to Google Scholar, he boasts over 21 thousand citations and a 67 h-index.[34] Semantic Scholar lists him between the two, with over 15 thousand citations and a 57 h.[35]

Selected publications since 2020:

References
  1. "David Wald". ORCID. Retrieved 2023-06-03.
  2. "David J. Wald, Ph.D." ICONHIC2016. Retrieved 2023-06-03.
  3. "Faculty and Staff". Department of Geophysics. Colorado School of Mines. Retrieved 2023-06-01.
  4. Ortiz, Rita. "New Earthquake Spectra Editor David Wald". Earthquake Engineering Research Institute. Retrieved 2023-06-01.
  5. Elizabeth (2022-12-01). "Welcoming Jack Baker as Editor-in-Chief and Helen Crowley as Editor of Earthquake Spectra". Earthquake Engineering Research Institute. Retrieved 2023-06-01.
  6. "wald: David J. Wald". Southern California Earthquake Center. Retrieved 2023-06-03.
  7. "David J. Wald". UCLA Samueli School Of Engineering. Retrieved 2023-06-01.
  8. "David J Wald". U.S. Geological Survey. Retrieved 2023-02-22.
  9. "Geophysics Seminar - David Wald "Citizen Science and Macroseismic Intensity in Earthquake Research, Engineering, & Risk Assessment," USGS". Stanford Doerr School of Sustainability. 26 January 2023. Retrieved 2023-06-03.
  10. Allstadt, Kate E; Thompson, Eric M; Jibson, Randall W; Wald, David J; Hearne, Michael; Hunter, Edward J; Fee, Jeremy; Schovanec, Heather; Slosky, Daniel; Haynie, Kirstie L (2022). "The US Geological Survey ground failure product: Near-real-time estimates of earthquake-triggered landslides and liquefaction". Earthquake Spectra. 38 (1): 5–36. Bibcode:2022EarSp..38....5A. doi:10.1177/87552930211032685. ISSN 8755-2930.
  11. "David Wald". Natural Hazards Center || Workshop 2018 || Bio Page. Retrieved 2023-06-03.
  12. "May 4 Provost's Lecture: Challenges in Real-time Earthquake Shaking and Impact Estimation". SBU News. Stony Brook University. 2022-04-28. Retrieved 2023-06-03.
  13. "EERI Webinar: Case Studies of Financial Decision-Making using Near Real time Post Earthquake Information, by Dr. David J. Wald". Geoengineer.org. Retrieved 2023-06-03.
  14. "David Wald (PhD '93), Research Geophysicist, USGS". Heritage Project. Caltech. 2022-08-05. Retrieved 2023-06-01.
  15. "Lisa Wald, Vice-President – Evergreen Audubon". Evergreen Nature Center. Retrieved 2023-06-03.
  16. "Lisa A Wald". U.S. Geological Survey. Retrieved 2023-02-23.
  17. U.S. Geological Survey (2017). "ShakeMap – Earthquake Ground Motion and Shaking Intensity Maps". U.S. Geological Survey. doi:10.5066/F7W957B2.
  18. "Did You Feel It?". U.S. Geological Survey. Retrieved 2023-06-03.
  19. Dengler, L. A.; Dewey, J. W. (1998-04-01). "An intensity survey of households affected by the Northridge, California, earthquake of 17 January 1994". Bulletin of the Seismological Society of America. 88 (2): 441–462. Bibcode:1998BuSSA..88..441D. doi:10.1785/BSSA0880020441. ISSN 1943-3573. S2CID 130602800.
  20. "Did You Feel It?". U.S. Geological Survey. Retrieved 2023-06-03.
  21. Atkinson, G. M.; Wald, D. J. (2007-05-01). ""Did You Feel It?" Intensity Data: A Surprisingly Good Measure of Earthquake Ground Motion". Seismological Research Letters. 78 (3): 362–368. Bibcode:2007SeiRL..78..362A. doi:10.1785/gssrl.78.3.362. ISSN 0895-0695.
  22. "USGS Open-File Report 2008-1158: ShakeCast Manual". pubs.usgs.gov. Retrieved 2023-03-01.
  23. Lin, Kuo-Wan; Wald, David J. (2008). "ShakeCast Manual". U.S. Geological Survey Open-File Report 2008-1158. Open-File Report. doi:10.3133/ofr20081158.
  24. Wald, D. J.; Jaiswal, K. S.; Marano, K.; Hearne, M.G.; Lin, K.; Slosky, D.; Allstadt, K. E.; Thompson, E. M.; Worden, C. B.; Hayes, G. P.; Quitoriano, V. (2020). "AN UPDATE ON USGS NEAR-REAL-TIME EARTHQUAKE SHAKING AND IMPACT PRODUCTS" (PDF). Proceedings of the 17th World Conference on Earthquake Engineering.
  25. "IRIS/SSA Distinguished Lecture Series". IRIS. Retrieved 2023-03-01.
  26. Elizabeth (2021-11-12). "David J. Wald Receives 2022 William B. Joyner Lecture Award". Earthquake Engineering Research Institute. Retrieved 2023-06-03.
  27. "Abstracts – 2018". Colorado Scientific Society. Retrieved 2023-06-03.
  28. mortimer (4 March 2014). "David Wald to Deliver 2014 EERI Distinguished Lecture". Earthquake Engineering Research Institute. Retrieved 2023-03-01.
  29. "Dave Wald wins The Eugene M. Shoemaker Award for Lifetime Achievement in Communications". Earthquake Engineering Research Institute. Retrieved 2023-02-22.
  30. "David Wald". AGU. Retrieved 2023-03-01.
  31. "David J. Wald Selected as 2022 Joyner Lecturer". Seismological Society of America. Retrieved 2023-06-03 – via LinkedIn.
  32. "David J. Wald". Seismological Society of America. Retrieved 2023-06-01.
  33. "Wald, David Jay". Scopus (Author details). Retrieved 2023-06-01.
  34. "David J Wald". Google Scholar. Retrieved 2023-06-01.
  35. "D. Wald". Semantic Scholar. Retrieved 2023-06-01.
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