Item talk:Q47819
From geokb
{
"USGS Staff Profile": {
"@context": "https://schema.org",
"@type": "Person",
"dateModified": "2024-09-21T07:56:34.157831",
"name": "Larry G. Mastin, Ph.D.",
"identifier": [
{
"@type": "PropertyValue",
"propertyID": "ORCID",
"value": "0000-0002-4795-1992"
}
],
"jobTitle": "Physical Volcanologist",
"hasOccupation": [
{
"@type": "OrganizationalRole",
"startDate": "2024-09-21T07:56:34.163613",
"affiliatedOrganization": {
"@type": "Organization",
"name": "Cascades Volcano Observatory",
"url": "https://www.usgs.gov/observatories/cvo"
},
"roleName": "Physical Volcanologist"
}
],
"description": [
{
"@type": "TextObject",
"additionalType": "short description",
"abstract": "Physical Volcanologist with the Cascades Volcano Observatory"
},
{
"@type": "TextObject",
"additionalType": "staff profile page introductory statement",
"abstract": "I have spent much of my career working to understand, assess, and mitigate the hazards of volcanic ash."
},
{
"@type": "TextObject",
"additionalType": "personal statement",
"abstract": "To understand the nature of the hazard, I have studied tephra deposits in the field and designed experiments to generate volcanic ash in the laboratory. I also develop and use models that simulate the ascent of magma in conduits, rise of ash in volcanic plumes, and downwind movement of ash clouds. I have been involved in the development and application of several models that simulate these processes.I have worked with emergency managers, Volcanic Ash Advisory Centers, and specialists from more than a dozen volcano observatories around the world to improve the accuracy of volcanic ash forecasts, both for aviation safety and for ground-based communities. From 2010-2020 I served as co-chair of the World Meteorological Organization\u2019s Volcanic Ash Scientific Advisory Group, an expert panel dedicated to advising Volcanic Ash Advisory Centers on the science and practice of volcanic ash-cloud detection and forecasting.My professional life began as a mud logger working on the North Slope of Alaska in 1980-81. While studying for my master\u2019s degree at Stanford in 1982-84, I worked part time for the Tectonophysics branch of the USGS in Menlo Park, California, where I assisted with hydraulic fracturing stress measurements, and studied the growth of fractures and the development of breakouts, i.e. stress-induced zones of failure, around boreholes in sandstone.My Ph.D. work at Stanford, from 1984-1988, under Professor David Pollard, involved field and laboratory study of the growth of surface faults above a shallow dike in Long Valley Caldera, California. A second half of this study focused on how the dike heated groundwater that erupted to produce several large explosion craters, the Inyo Craters, north of the town of Mammoth Lakes.After completing my Ph.D., I worked from 1988-1990 as a post-doctoral researcher in the Geophysics Institute at the University of Karlsruhe, Germany. My tasks included compiling data for the European part of a World Stress Map project, and examining the state of stress at a deep drillhole site in northern Bavaria.At the Cascades Volcano Observatory, from 1990 through the late 2000s, I concentrated on the role of water in the style and timing of eruptions. This work involved, for example, an examination of correlations between rainfall and gas explosions at Mount St. Helens; on the conditions that produced explosive phreatomagmatic eruptions at Kilauea, and effects of turbulent water-magma mixing on eruptive style.Since the late 2000s, I have been involved primarily in volcanic ash hazards, as described above."
},
{
"@type": "TextObject",
"additionalType": "staff profile page abstract",
"abstract": "2021: \u201cComparing the hazards of wildfire smoke and volcanic ash in the Pacific Northwest\u201d, invited talk in the Cascadia Wildfire and Urban Smoke seminar series, sponsored by Portland State University and the Cascadia Innovation Corridor Iniative (search for it on YouTube)"
},
{
"@type": "TextObject",
"additionalType": "staff profile page abstract",
"abstract": "2020: \u201cProtecting air travel from volcanic ash in the coming decade\u201d, invited talk V08-15 at 2020 American Geophysical Union Fall Meeting."
},
{
"@type": "TextObject",
"additionalType": "staff profile page abstract",
"abstract": "2016: \u201cForecasting Ashfall Impacts from a Yellowstone Supereruption\u201d, USGS Menlo Park Public Lecture, May 26, 2016, https://www.usgs.gov/media/videos/forecasting-ashfall-impacts-a-yellowstone-supereruption"
}
],
"email": "lgmastin@usgs.gov",
"url": "https://www.usgs.gov/staff-profiles/larry-g-mastin",
"affiliation": [
{
"@type": "Organization",
"name": "Fellow, Geological Society of America"
},
{
"@type": "Organization",
"name": "Member, American Geophysical Union"
},
{
"@type": "Organization",
"name": "Member, International Association of Volcanology and Chemistry of the Earth's Interior (IAVCEI)"
},
{
"@type": "Organization",
"name": "Member, American Meteorological Society"
},
{
"@type": "Organization",
"name": "Member, American Association"
}
],
"hasCredential": [
{
"@type": "EducationalOccupationalCredential",
"name": "1988 Ph.D. Geomechanics, Stanford University"
},
{
"@type": "EducationalOccupationalCredential",
"name": "1984 M.S. Engineering Geology, Stanford University"
},
{
"@type": "EducationalOccupationalCredential",
"name": "1980 B.S. Geology, University of California, Davis (cum Laude)"
}
],
"knowsAbout": [
{
"@type": "Thing",
"additionalType": "self-claimed expertise",
"name": "Volcanic Ash Hazards"
},
{
"@type": "Thing",
"additionalType": "self-claimed expertise",
"name": "Explosive Eruptions"
},
{
"@type": "Thing",
"additionalType": "self-claimed expertise",
"name": "Ash and Aviation"
},
{
"@type": "Thing",
"additionalType": "self-claimed expertise",
"name": "Volcanic Ash Clouds"
},
{
"@type": "Thing",
"additionalType": "self-claimed expertise",
"name": "Volcanic Ash"
}
],
"memberOf": {
"@type": "OrganizationalRole",
"name": "staff member",
"member": {
"@type": "Organization",
"name": "U.S. Geological Survey"
},
"startDate": "2024-09-21T07:56:34.157835"
},
"award": [
"2018: Fellow, Geological Society of America"
]
},
"ORCID": {
"@context": "http://schema.org",
"@id": "https://orcid.org/0000-0002-4795-1992",
"@reverse": {
"creator": {
"@id": "https://doi.org/10.3390/atmos11101038",
"@type": "CreativeWork",
"identifier": {
"@type": "PropertyValue",
"propertyID": "doi",
"value": "10.3390/atmos11101038"
},
"name": "Comparing Simulations of Umbrella-Cloud Growth and Ash Transport with Observations from Pinatubo, Kelud, and Calbuco Volcanoes"
}
},
"@type": "Person",
"address": {
"@type": "PostalAddress",
"addressCountry": "US"
},
"familyName": "Mastin",
"givenName": "Larry",
"mainEntityOfPage": "https://orcid.org/0000-0002-4795-1992"
},
"OpenAlex": {
"created_date": "2023-07-21",
"display_name": "Larry G. Mastin",
"display_name_alternatives": [
"Larry Garver Mastin",
"Larry G. Mastin",
"L. G. Mastin",
"L. Mastin",
"Larry Mastin"
],
"ids": {
"openalex": "https://openalex.org/A5067835375",
"orcid": "https://orcid.org/0000-0002-4795-1992"
},
"last_known_institutions": [
{
"country_code": "US",
"display_name": "Cascades Volcano Observatory",
"id": "https://openalex.org/I2801780914",
"lineage": [
"https://openalex.org/I2801780914"
],
"ror": "https://ror.org/04wyk9691",
"type": "facility"
},
{
"country_code": "US",
"display_name": "United States Geological Survey",
"id": "https://openalex.org/I1286329397",
"lineage": [
"https://openalex.org/I1286329397",
"https://openalex.org/I1335927249"
],
"ror": "https://ror.org/035a68863",
"type": "government"
}
],
"orcid": "https://orcid.org/0000-0002-4795-1992",
"topics": [
{
"count": 40,
"display_name": "Tectonic and Geochronological Evolution of Orogens",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Earth and Planetary Sciences",
"id": "https://openalex.org/fields/19"
},
"id": "https://openalex.org/T10001",
"subfield": {
"display_name": "Geophysics",
"id": "https://openalex.org/subfields/1908"
}
},
{
"count": 33,
"display_name": "Numerical Weather Prediction Models",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Earth and Planetary Sciences",
"id": "https://openalex.org/fields/19"
},
"id": "https://openalex.org/T10466",
"subfield": {
"display_name": "Atmospheric Science",
"id": "https://openalex.org/subfields/1902"
}
},
{
"count": 23,
"display_name": "Seismicity and Tectonic Plate Interactions",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Earth and Planetary Sciences",
"id": "https://openalex.org/fields/19"
},
"id": "https://openalex.org/T10110",
"subfield": {
"display_name": "Geophysics",
"id": "https://openalex.org/subfields/1908"
}
},
{
"count": 20,
"display_name": "Aerosols' Impact on Climate and Hydrological Cycle",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Environmental Science",
"id": "https://openalex.org/fields/23"
},
"id": "https://openalex.org/T10347",
"subfield": {
"display_name": "Global and Planetary Change",
"id": "https://openalex.org/subfields/2306"
}
},
{
"count": 17,
"display_name": "Climate Change and Paleoclimatology",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Earth and Planetary Sciences",
"id": "https://openalex.org/fields/19"
},
"id": "https://openalex.org/T10017",
"subfield": {
"display_name": "Atmospheric Science",
"id": "https://openalex.org/subfields/1902"
}
},
{
"count": 16,
"display_name": "Landslide Hazards and Risk Assessment",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Environmental Science",
"id": "https://openalex.org/fields/23"
},
"id": "https://openalex.org/T10535",
"subfield": {
"display_name": "Management, Monitoring, Policy and Law",
"id": "https://openalex.org/subfields/2308"
}
},
{
"count": 15,
"display_name": "Impacts of Climate Change on Glaciers and Water Availability",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Earth and Planetary Sciences",
"id": "https://openalex.org/fields/19"
},
"id": "https://openalex.org/T10644",
"subfield": {
"display_name": "Atmospheric Science",
"id": "https://openalex.org/subfields/1902"
}
},
{
"count": 14,
"display_name": "Impact of Climate Change on Forest Wildfires",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Environmental Science",
"id": "https://openalex.org/fields/23"
},
"id": "https://openalex.org/T10555",
"subfield": {
"display_name": "Global and Planetary Change",
"id": "https://openalex.org/subfields/2306"
}
},
{
"count": 13,
"display_name": "Urban Wind Environment and Air Quality Modeling",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Environmental Science",
"id": "https://openalex.org/fields/23"
},
"id": "https://openalex.org/T11371",
"subfield": {
"display_name": "Environmental Engineering",
"id": "https://openalex.org/subfields/2305"
}
},
{
"count": 12,
"display_name": "Aeroacoustic Analysis of Jet Noise",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Engineering",
"id": "https://openalex.org/fields/22"
},
"id": "https://openalex.org/T11008",
"subfield": {
"display_name": "Aerospace Engineering",
"id": "https://openalex.org/subfields/2202"
}
},
{
"count": 12,
"display_name": "Machine Learning for Mineral Prospectivity Mapping",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Computer Science",
"id": "https://openalex.org/fields/17"
},
"id": "https://openalex.org/T12157",
"subfield": {
"display_name": "Artificial Intelligence",
"id": "https://openalex.org/subfields/1702"
}
},
{
"count": 12,
"display_name": "Turbulent Flows and Vortex Dynamics",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Engineering",
"id": "https://openalex.org/fields/22"
},
"id": "https://openalex.org/T10360",
"subfield": {
"display_name": "Computational Mechanics",
"id": "https://openalex.org/subfields/2206"
}
},
{
"count": 11,
"display_name": "Machine Learning for Earthquake Early Warning Systems",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Computer Science",
"id": "https://openalex.org/fields/17"
},
"id": "https://openalex.org/T13018",
"subfield": {
"display_name": "Artificial Intelligence",
"id": "https://openalex.org/subfields/1702"
}
},
{
"count": 11,
"display_name": "Climate Change and Variability Research",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Environmental Science",
"id": "https://openalex.org/fields/23"
},
"id": "https://openalex.org/T10029",
"subfield": {
"display_name": "Global and Planetary Change",
"id": "https://openalex.org/subfields/2306"
}
},
{
"count": 11,
"display_name": "Global Methane Emissions and Impacts",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Environmental Science",
"id": "https://openalex.org/fields/23"
},
"id": "https://openalex.org/T11588",
"subfield": {
"display_name": "Global and Planetary Change",
"id": "https://openalex.org/subfields/2306"
}
},
{
"count": 11,
"display_name": "Aeolian Geomorphology and Wind Erosion Dynamics",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Earth and Planetary Sciences",
"id": "https://openalex.org/fields/19"
},
"id": "https://openalex.org/T12383",
"subfield": {
"display_name": "Earth-Surface Processes",
"id": "https://openalex.org/subfields/1904"
}
},
{
"count": 11,
"display_name": "Study of Earthquake Precursor Phenomena",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Earth and Planetary Sciences",
"id": "https://openalex.org/fields/19"
},
"id": "https://openalex.org/T12424",
"subfield": {
"display_name": "Geophysics",
"id": "https://openalex.org/subfields/1908"
}
},
{
"count": 11,
"display_name": "Mantle Dynamics and Earth's Structure",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Earth and Planetary Sciences",
"id": "https://openalex.org/fields/19"
},
"id": "https://openalex.org/T10413",
"subfield": {
"display_name": "Geophysics",
"id": "https://openalex.org/subfields/1908"
}
},
{
"count": 10,
"display_name": "High-Resolution Seismic Noise Tomography",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Earth and Planetary Sciences",
"id": "https://openalex.org/fields/19"
},
"id": "https://openalex.org/T11757",
"subfield": {
"display_name": "Geophysics",
"id": "https://openalex.org/subfields/1908"
}
},
{
"count": 9,
"display_name": "Turbulent Interactions with Dispersed Particles and Droplets",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Engineering",
"id": "https://openalex.org/fields/22"
},
"id": "https://openalex.org/T12350",
"subfield": {
"display_name": "Ocean Engineering",
"id": "https://openalex.org/subfields/2212"
}
},
{
"count": 6,
"display_name": "Geological Modeling and Uncertainty Analysis",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Earth and Planetary Sciences",
"id": "https://openalex.org/fields/19"
},
"id": "https://openalex.org/T13067",
"subfield": {
"display_name": "Geochemistry and Petrology",
"id": "https://openalex.org/subfields/1906"
}
},
{
"count": 5,
"display_name": "Drilling Fluid Technology and Well Integrity",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Engineering",
"id": "https://openalex.org/fields/22"
},
"id": "https://openalex.org/T10892",
"subfield": {
"display_name": "Ocean Engineering",
"id": "https://openalex.org/subfields/2212"
}
},
{
"count": 5,
"display_name": "Rock Mechanics and Engineering",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Engineering",
"id": "https://openalex.org/fields/22"
},
"id": "https://openalex.org/T10161",
"subfield": {
"display_name": "Mechanics of Materials",
"id": "https://openalex.org/subfields/2211"
}
},
{
"count": 4,
"display_name": "Applications of Ground-Penetrating Radar in Geoscience and Engineering",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Engineering",
"id": "https://openalex.org/fields/22"
},
"id": "https://openalex.org/T11609",
"subfield": {
"display_name": "Ocean Engineering",
"id": "https://openalex.org/subfields/2212"
}
},
{
"count": 4,
"display_name": "Global Lightning Distribution and Physics",
"domain": {
"display_name": "Physical Sciences",
"id": "https://openalex.org/domains/3"
},
"field": {
"display_name": "Physics and Astronomy",
"id": "https://openalex.org/fields/31"
},
"id": "https://openalex.org/T10787",
"subfield": {
"display_name": "Astronomy and Astrophysics",
"id": "https://openalex.org/subfields/3103"
}
}
],
"updated_date": "2024-05-19T13:53:51.930562"
}
}
