Alexandra (Alex) Hatem
Biography
My research is focused on how to best describe the behavior of active faults in the recent past. I use methods such as paleoseismology, slip rate studies, topographic analysis, numerical modeling and tectonic reconstructions to understand how earthquakes occur in space and time, both on single faults and within larger fault systems. Overall, I am interested in how faults evolve over time and characterizing variability and evolution of fault behavior on across different space-time scales. An overarching goal of my work is to understand how to represent geological constraints within hazard models, like the National Seismic Hazard Map and the Uniform California Earthquake Rupture Forecast.
Professional Experience
Research Geologist: USGS-GHSC, 2020-present
Mendenhall post-doctoral fellow: USGS-GHSC, 2019-2020
Education
PhD: University of Southern California, 2019
MS: University of Massachusetts, Amherst, 2014
BA: Wellesley College, 2012
Science and Products
Surface Rupture Map of the 2020 M 6.5 Monte Cristo Range earthquake, Esmeralda and Mineral counties, Nevada
The 15 May 2020, M6.5 Monte Cristo Range earthquake was the largest earthquake in Nevada in over 66 years and occurred in a sparsely populated area of western Nevada about 74 km southeast of the town of Hawthorne. The earthquake produced surface rupture distributed across a 28-km-long zone along the eastward projection of the Candelaria fault in...
Dee, Seth; Koehler, Richard D; Elliott, Austin John; Hatem, Alexandra Elise; Pickering, Alexandra; Pierce, Ian; Seitz, Gordon G.; Collett, Camille Marie; Dawson, Timothy E.; De Masi, Conni; dePolo, Craig M; Hartsorn, Evan; Madugo, Christopher; Trexler, Charles Cashman; Verdugo, Danielle M; Wesnousky, Steven G.; Zachariasen, Judith Field response and surface rupture characteristics of the 2020 M6.5 Monte Cristo Range earthquake, central Walker Lane, Nevada
The M 6.5 Monte Cristo Range earthquake that occurred in the central Walker Lane on 15 May 2020 was the largest earthquake in Nevada in 66 yr and resulted in a multidisciplinary scientific field response. The earthquake was the result of left‐lateral slip along largely unmapped parts of the Candelaria fault, one of a series of east–...
Koehler, Richard D; Dee, Seth; Elliott, Austin John; Hatem, Alexandra Elise; Pickering, Alexandra; Pierce, Ian; Seitz, Gordon G. Documentation of Surface Fault Rupture and Ground‐Deformation Features Produced by the 4 and 5 July 2019 Mw 6.4 and Mw 7.1 Ridgecrest Earthquake Sequence
The Mw">MwMw 6.4 and Mw">MwMw 7.1 Ridgecrest earthquake sequence occurred on 4 and 5 July 2019 within the eastern California shear zone of southern California. Both events produced extensive surface faulting and ground deformation within Indian Wells Valley and Searles Valley. In the weeks following the earthquakes, more...
Ponti, Daniel J.; Blair, James Luke; Rosa Carla M; Thomas, Kate; Pickering, Alexandra; Akciz, Sinan; Angster, Stephen J.; Avouac, Jean-Philipe; Bachhuber, Jeffrey; Bacon, Steven; Barth, Nicolas C.; Bennett, S.; Blake, Kelly; Bork, Stephan; Brooks, Benjamin A.; Bullard, Thomas; Burgess, Paul A.; Chupik, Colin; Dawson, Timothy E.; DeFrisco, Michael; Delano, Jaime E.; DeLong, Stephen B.; Dolan, James D.; Donnellan, Andrea; Duross, Christopher; Ericksen, Todd; Frost, Erik; Funning, Gareth J.; Gold, Ryan D.; Graehl, Nicholas A; Gutierrez, Carlos; Haddon, Elizabeth; Hatem, Alexandra Elise; Helms, John; Hernandez, Janis; Hitchcock, Christopher S.; Holland, Peter; Hudnut, Kenneth W.; Kendrick, Katherine; Koehler, Richard D; Kozaci, Ozgur; Ladinsky, Tyler C.; Leeper, Robert; Madugo, Christopher; Mareschal, Maxime; McDonald, James; McPhillips, Devin; Milliner, Christopher; Mongovin, Daniel; Morelan, Alexander; Nale, Stephanie; Nevitt, Johanna; O'Neal, Matt; Olsen, Brian J.; Oskin, Michael; Padilla, Salena; Patton, Jason; Philibosian, Belle; Pierce, Ian; Pridmore, Cynthia; Roth, Nathaniel; Sandwell, David ; Scharer, Katherine; Seitz, Gordon G.; Singleton, Drake; Smith-Konter, Bridget; Spangler, Eleanor; Swanson, Brian J.; Jobe, Jessica Thompson; Treiman, Jerome; Valencia, Francesca; Vanderwal, Joshua; Williams, Alana; Xu, Xiaohua; Zachariasen, Judith; Zimmerman, Jade; Zinke, Robert Surface displacement distributions for the July 2019 Ridgecrest, California earthquake ruptures
Surface rupture in the 2019 Ridgecrest, California, earthquake sequence occurred along two orthogonal cross faults and includes dominantly left‐lateral and northeast‐striking rupture in the Mw">Mw 6.4 foreshock and dominantly right‐lateral and northwest‐striking rupture in the Mw">Mw 7.1 mainshock. We present >...
Duross, Christopher; Gold, Ryan D.; Dawson, Timothy E.; Scharer, Katherine; Kendrick, Katherine; Akciz, Sinan; Angster, Stephen J.; Bachhuber, Jeffery; Bacon, Steven; Bennett, Scott E. K.; Blair, Luke; Brooks, Benjamin A.; Bullard, Thomas; Burgess, W. Paul; Chupik, Colin; DeFrisco, Michael; Delano, Jaime; Dolan, James D.; Frost, Erik; Graehl, Nick; Haddon, Elizabeth; Hatem, Alexandra Elise; Hernandez, Janis; Hitchcock, Christopher S.; Hudnut, Kennth; Thompson Jobe, Jessica; Koehler, Richard D; Kozaci, Ozgur; Ladinsky, Tyler C.; Madugo, Christopher; McPhillips, Devin; Milliner, Christopher; Morelan, Alexander; Olson, Brian; Patton, Jason; Philibosian, Belle; Pickering, Alexandra J.; Pierce, Ian; Ponti, Daniel J.; Seitz, Gordon G.; Spangler, Eleanor; Swanson, Brian J.; Thomas, Kate; Treiman, Jerome; Valencia, Francesca; Williams, Alana; Zinke, Robert