Dear Colleagues, We are pleased to announce that the next cycle of the USGS Mendenhall Postdoctoral Research Fellowship Program provides several opportunities to study active volcanic processes. More details on the program, including qualifications and application procedures, can be found at https://www.usgs.gov/centers/mendenhall-research-fellowship-program. To be considered for this opportunity, candidates must have successfully completed a Ph.D. in an area described in the Research Opportunity before employment begins. The U.S. Federal Government gives *strong priority to U.S. citizens and nationals*, but for these two-year positions, noncitizens may be considered under certain circumstances. See further information on Qualifications here: https://www.usgs.gov/centers/mendenhall/qualifications The research proposal is the most important part of the application package, and applicants are strongly urged to coordinate the development of the proposal with the appropriate Research Advisors. APPLICATION DEADLINE IS NOVEMBER 1, 2022. If interested, we recommend that you contact the research advisors of the opportunities listed below immediately. Relevant opportunities: RO 21-26 Deciphering Mauna Loa's Magma Plumbing System Over the Past 200 Years Mauna Loa has produced 33 eruptions since 1843, many of which generated voluminous, and sometimes fast-moving, lava flows. Unfortunately, detailed geochemical which records of magma storage and transport prior to eruption (e.g., from minerals, glasses, and melt inclusions) do not exist. This position will focus on the petrology and geochemistry of eruptions throughout the past 200 years to reveal patterns of change in magma storage and transport that can help optimize monitoring efforts, improve HVO's ability to interpret monitoring data, and better forecast future eruptions and volcanic behavior. Duty Station - Hilo, Hawai'i Advisors: Kendra J. Lynn, Frank A. Trusdell, Drew Downs, Patricia Nadeau, Ashton Flinders, Peter Kelley Link: https://www.usgs.gov/centers/mendenhall-research-fellowship-program/21-26-deciphering-mauna-loas-magma-plumbing-system Contact: Kendra J. Lynn, klynn@usgs.gov<mailto:klynn@usgs.gov> RO 21-27 Volcanic hazards in the Mono Basin, eastern California The Mono Basin contains dozens of young silicic eruptions, including several that are <1,000 years old in and adjacent to Mono Lake that are not well understood. This position will focus on geology, stratigraphy and geochronology to characterize the eruptive history in the Mono Basin and integrate it with recent geophysical studies to develop an improved understanding of volcanic hazards in the basin. Duty Station - Menlo Park, California or Moffett Field, California Advisors: Andy Calvert, Judy Fierstein, Shaul Hurwitz, Jorge Vazquez Link: https://www.usgs.gov/centers/mendenhall-research-fellowship-program/21-27-volcanic-hazards-mono-basin-eastern-california Contact: Andy Calvert, acalvert@usgs.gov<mailto:acalvert@usgs.gov> RO 21-28 Detecting and characterizing volcanic unrest through synoptic observations of volcanic degassing from the ground, air, and space This position aims to improve our ability to monitor volcanic unrest using remote sensing observations of volcanic gases. An integrative approach for analyzing measurements from satellites, aircraft, and from the ground will be developed and applied to active volcanoes around the world. The results will yield insights into volcanic processes and contribute to eruption forecasts. Duty Station - Vancouver, Washington or Anchorage, Alaska Advisors: Christoph Kern, Taryn Lopez, Simon Carn Link: https://www.usgs.gov/centers/mendenhall-research-fellowship-program/21-28-detecting-and-characterizing-volcanic-unrest Contact: Christoph Kern, ckern@usgs.gov<mailto:ckern@usgs.gov> Dr. Kendra J. Lynn Research Geologist - Petrologist USGS Hawaiian Volcano Observatory ORCID ID: 0000-0001-7886-4376 Webpage<https://www.usgs.gov/staff-profiles/kendra-j-lynn?qt-staff_profile_science_products=3#qt-staff_profile_science_products> Dr. Kendra J. Lynn Research Geologist - Petrologist USGS Hawaiian Volcano Observatory ORCID ID: 0000-0001-7886-4376 Webpage<https://www.usgs.gov/staff-profiles/kendra-j-lynn?qt-staff_profile_science_products=3#qt-staff_profile_science_products>