Julie Herrick is a Geophysicist with the Earthquake Hazards Program.
Professional Experience
Geophysicist, USGS Geologic Hazards Science Center (2022–Present)
Geologist, USGS Denver Scientific Publishing Network (2014–2022)
Volcanologist, Smithsonian Global Volcanism Program (2011–2014)
Peace Corps Volunteer, Sector de Salud y Ambiental en la Comarca Chiriquí de Panamá (2007–2009)
Education and Certifications
Michigan Technological University
Boston University
Smith College
Abstracts and Presentations
Herrick, J.A., and Langseth, M.L. (2019) USGS expanding access to geospatial publications, AGU Fall Meeting, San Francisco, Calif., 9–13 Dec. 2019.
Yong, A., McPhillips, D., Herrick, J., and Dozal, J. (2018) An updated compilation of VS30 in the United States, SCEC Annual Meeting, Palm Springs, Calif., 7 Aug. 2018.
Iwahashi, J.; Yamazaki, D.; Herrick, J.A.; Yong, A.; Matsuoka, M.; and Mital, U. (2018) Development of terrain classifications using DEMs and the relation with VS30 for each terrain type, AGU Fall Meeting, Washington, D.C., 10–14 Dec. 2018.
Yong, A.; Cochran, E.S.; Herrick, J.A.; Andrews, J.R.; and Yu, E. (2017) Using VS30 to estimate station ML adjustments (dML), AGU Fall Meeting, New Orleans, La., 11–15 Dec. 2017.
Iwahashi, J.; Yamazaki, D.; Matsuoka, M.; Thamarux, P.; Herrick, J.A.; Yong, A.; and Mital, U. (2017) Global terrain classification using Multiple-Error-Removed Improved-Terrain (MERIT) to address susceptibility of landslides and other geohazards, AGU Fall Meeting, New Orleans, La., 11–15 Dec. 2017.
Herrick, J.A.; De Angelis, S.; and Toscano, M.A. (2017) Provenance of floating pumice in the Caribbean—Big data and hierarchical clustering, IAVCEI, Portland, Ore., USA, 14–18 Aug. 2017.
Herrick, J.A., and Hess, A.J. (2017) From the field to publication—Integration of GIS throughout the mapping process, USGS Denver, Digital Mapping Techniques workshop, Minneapolis, Minn., May 21–24, 2017: Minneapolis, Minn., Minnesota Geological Survey.
Herrick, J.A., Hosseini, M., and Yong, A. (2017) Comparing earthquake-based P-wave and traditional array-based methods for obtaining VS30, in Abstracts for Poster Presentations at 2017 Seismological Society of America Annual Meeting, Denver, Colo., April 17–19, Seismological Research Letters.
Science and Products
Data Release - Geologic map of the central Upper Peninsula, Michigan
Updated Compilation of VS30 Data for the United States
A probabilistic framework to model distributions of VS30
VS30 and Dominant Site Frequency (fd) as Provisional Station ML Corrections (dML) in California
Divisions of geologic time—Major chronostratigraphic and geochronologic units
2012 volcanic activity in Alaska: Summary of events and response of the Alaska Volcano Observatory
2010 Volcanic activity in Alaska, Kamchatka, and the Kurile Islands: Summary of events and response of the Alaska Volcano Observatory
Non-USGS Publications**
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
- Data
Data Release - Geologic map of the central Upper Peninsula, Michigan
This dataset supports the publication "Geophysical insights into Paleoproterozoic tectonics along the southern margin of the Superior Province, central Upper Peninsula, Michigan, USA." At a 1:100,000 scale, these data are in a geologic database in the Geologic Map Schema (GeMS) which includes spatial feature classes and non-spatial tables that contain the geologic information presented iUpdated Compilation of VS30 Data for the United States
VS30, the time-averaged shear-wave velocity (VS) to a depth of 30 meters, is a key index adopted by the earthquake engineering community to account for seismic site conditions. VS30 is typically based on geophysical measurements of VS derived from invasive and noninvasive techniques at sites of interest. Owing to cost considerations, as well as logistical and environmental concerns, VS30 data are - Publications
A probabilistic framework to model distributions of VS30
The time‐averaged shear‐wave velocity in the upper 30 m depth from the ground surface, or VS30, is often used as a predictor to describe local site effects in ground‐motion models. Although VS30 is typically determined from in situ measurements, it is not always feasible to obtain such measurements due to project restrictions or site accessibility. This motivates the development and use of proxy‐VS30 and Dominant Site Frequency (fd) as Provisional Station ML Corrections (dML) in California
New seismic stations added to a regional seismic network cannot be used to calculate local magnitude (ML) until a revised regionwide amplitude decay function is developed. Each station must record a minimum number of local and regional earthquakes that meet specific amplitude requirements prior to recalibration of the amplitude decay function. Station component adjustments (dML; Uhrhammer et aDivisions of geologic time—Major chronostratigraphic and geochronologic units
IntroductionEffective communication in the geosciences requires a consistent nomenclature for stratigraphic units and, especially, for divisions of geologic time. A geologic time scale is composed of standard stratigraphic divisions based on rock sequences and is calibrated in years.Geologists from the U.S. Geological Survey (USGS), State geological surveys, academia, and other organizations requi2012 volcanic activity in Alaska: Summary of events and response of the Alaska Volcano Observatory
The Alaska Volcano Observatory (AVO) responded to eruptions, possible eruptions, volcanic unrest, or suspected unrest at 11 volcanic centers in Alaska during 2012. Of the two verified eruptions, one (Cleveland) was clearly magmatic and the other (Kanaga) was most likely a single phreatic explosion. Two other volcanoes had notable seismic swarms that probably were caused by magmatic intrusions (Ili2010 Volcanic activity in Alaska, Kamchatka, and the Kurile Islands: Summary of events and response of the Alaska Volcano Observatory
The Alaska Volcano Observatory (AVO) responded to eruptions, possible eruptions, volcanic unrest or suspected unrest at 12 volcanic centers in Alaska during 2010. The most notable volcanic activity consisted of intermittent ash emissions from long-active Cleveland volcano in the Aleutian Islands. AVO staff also participated in hazard communication regarding eruptions or unrest at seven volcanoes iNon-USGS Publications**
Herrick, J.A, Siebert, L., and Rose, W.I., 2013, Large-volume Barriles and Caisán debris avalanche deposits from Volcán Barú, Panama, in: Rose, W.I., Palma, J.L., Granados, H.D., and Varley, N., eds. Understanding open-vent volcanism and related hazards, GSA Special Publication 498, p. 141–162, https://doi.org/10.1130/2013.2498(09).Global Volcanism Program, 2011. Report on Arenal (Costa Rica) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 36:4. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201104-345033Global Volcanism Program, 2011. Report on Irazu (Costa Rica) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 36:4. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201104-345060Global Volcanism Program, 2011. Report on Merapi (Indonesia) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 36:5. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201105-263250Global Volcanism Program, 2011. Report on Galeras (Colombia) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 36:5. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201105-351080Global Volcanism Program, 2011. Report on Fuego (Guatemala) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 36:6. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201106-342090Global Volcanism Program, 2011. Report on Suwanosejima (Japan) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 36:7. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201107-282030Global Volcanism Program, 2011. Report on Kirishimayama (Japan) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 36:7. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201107-282090Global Volcanism Program, 2011. Report on Aira (Japan) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 36:10. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201110-282080Global Volcanism Program, 2011. Report on Concepcion (Nicaragua) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 36:10. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201110-344120Global Volcanism Program, 2011. Report on Telica (Nicaragua) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 36:11. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201111-344040Global Volcanism Program, 2011. Report on San Cristobal (Nicaragua) (Nicaragua) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 36:12. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201112-344020Global Volcanism Program, 2012. Report on Cerro Negro (Nicaragua) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 37:1. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201201-344070Global Volcanism Program, 2012. Report on Momotombo (Nicaragua) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 37:2. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201202-344090Global Volcanism Program, 2012. Report on Mombacho (Nicaragua) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 37:2. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201202-344110Global Volcanism Program, 2012. Report on Maderas (Nicaragua) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 37:3. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201203-344130Global Volcanism Program, 2012. Report on Masaya (Nicaragua) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 37:4. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201204-344100Global Volcanism Program, 2012. Report on Galeras (Colombia) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 37:4. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201204-351080Global Volcanism Program, 2012. Report on Popocatepetl (Mexico) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 37:5. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201205-341090Global Volcanism Program, 2012. Report on Masaya (Nicaragua) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 37:6. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201206-344100Global Volcanism Program, 2012. Report on Nevado del Ruiz (Colombia) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 37:7. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201207-351020Global Volcanism Program, 2012. Report on Nevado del Ruiz (Colombia) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 37:8. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201208-351020Global Volcanism Program, 2012. Report on San Cristobal (Nicaragua) (Nicaragua) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 37:8. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201208-344020Global Volcanism Program, 2012. Report on Sotara (Colombia) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 37:9. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201209-351061Global Volcanism Program, 2012. Report on Purace (Colombia) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 37:9. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201209-351060Global Volcanism Program, 2012. Report on Popocatepetl (Mexico) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 37:9. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201209-341090Global Volcanism Program, 2012. Report on Nevado del Huila (Colombia) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 37:10. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201210-351050Global Volcanism Program, 2012. Report on Machin (Colombia) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 37:11. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201211-351040Global Volcanism Program, 2012. Report on Pagan (United States) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 37:12. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201212-284170Global Volcanism Program, 2013. Report on Nevado del Huila (Colombia) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 38:1. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201301-351050Global Volcanism Program, 2013. Report on San Cristobal (Nicaragua) (Nicaragua) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 38:1. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201301-344020Global Volcanism Program, 2013. Report on Dona Juana (Colombia) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 38:1. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201301-351070Global Volcanism Program, 2013. Report on Cumbal (Colombia) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 38:2. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201302-351100Global Volcanism Program, 2013. Report on Galeras (Colombia) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 38:3. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201303-351080Global Volcanism Program, 2013. Report on Azufral (Colombia) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 38:3. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201303-351090Global Volcanism Program, 2013. Report on Kizimen (Russia) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 38:4. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201304-300230Global Volcanism Program, 2013. Report on Fuego (Guatemala) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 38:5. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201305-342090Global Volcanism Program, 2013. Report on Cerro Bravo (Colombia) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 38:6. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201306-351012Global Volcanism Program, 2013. Report on Nevado del Tolima (Colombia) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 38:6. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201306-351030Global Volcanism Program, 2013. Report on Sangay (Ecuador) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 38:7. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201307-352090Global Volcanism Program, 2013. Report on Chaiten (Chile) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 38:8. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201308-358041Global Volcanism Program, 2013. Report on Puyehue-Cordon Caulle (Chile) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 38:9. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201309-357150Global Volcanism Program, 2013. Report on Copahue (Chile-Argentina) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 38:9. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201309-357090Global Volcanism Program, 2013. Report on Apoyeque (Nicaragua) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 38:10. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201310-344091Global Volcanism Program, 2013. Report on Cerro Negro (Nicaragua) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 38:10. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201310-344070Global Volcanism Program, 2013. Report on Cleveland (United States) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 38:10. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201310-311240Global Volcanism Program, 2013. Report on Planchon-Peteroa (Chile) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 38:11. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201311-357040Global Volcanism Program, 2013. Report on Mauna Kea (United States) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 38:12. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201312-332030Global Volcanism Program, 2014. Report on Galeras (Colombia) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 39:1. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201401-351080Global Volcanism Program, 2014. Report on Telica (Nicaragua) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 39:2. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201402-344040Global Volcanism Program, 2014. Report on Santa Maria (Guatemala) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 39:3. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201403-342030Global Volcanism Program, 2014. Report on Fuego (Guatemala) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 39:4. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201404-342090Global Volcanism Program, 2014. Report on Kilauea (United States) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 39:5. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201405-332010Global Volcanism Program, 2014. Report on Kusatsu-Shiranesan (Japan) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 39:6. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201406-283120Global Volcanism Program, 2014. Report on Nevado del Ruiz (Colombia) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 39:7. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201407-351020Global Volcanism Program, 2014. Report on Kikai (Japan) (Herrick, J.A., and Wunderman, R., eds.). Bulletin of the Global Volcanism Network, 39:7. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN201407-282060**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.