Frank Trusdell
Frank A. Trusdell is a research geologist at the U.S. Geological Survey's Hawaiian Volcano Observatory.
Trusdell’s work has included a wide range of field-based studies and the production of detailed geologic maps of Mauna Loa, the largest active volcano in the world. To date he has completed four of five maps, each encompassing an area of Mauna Loa from its summit to sea level. These geologic maps provide information on the long-term eruptive behavior of the volcano. Trusdell also led the effort to create and publish lava inundation zone maps for Mauna Loa (https://doi.org/10.3133/sim3387). These nine maps, which identify parts of the volcano that could erupt and send lava flows downslope, provide information that will help emergency managers identify people, property, and facilities at risk during future Mauna Loa eruptions.
Science and Products
Tohoku-Oki Earthquake Tsunami Runup and Inundation Data for Sites Around the Island of Hawaiʻi
Mauna Loa--history, hazards and risk of living with the world's largest volcano
Catalog of Tephra samples from Kilauea's summit eruption, March-December 2008
New and revised 14C dates for Hawaiian surface lava flows: Paleomagnetic and geomagnetic implications
Crisis GIS--Preparing for and responding to volcanic eruptions in the United States
Digital database of the geologic map of the Island of Hawai'i
Perspectives on basaltic magma crystallization and differentiation: Lava-lake blocks erupted at Mauna Loa volcano summit, Hawaii
Distribution, 14C chronology, and paleomagnetism of latest Pleistocene and Holocene lava flows at Haleakala volcano, Island of Maui, Hawai'i: A revision of lava flow hazard zones
Preliminary Geologic Map of Mount Pagan Volcano, Pagan Island, Commonwealth of the Northern Mariana Islands
Emplacement and inflation structures of submarine and subaerial pahoehoe lavas from Hawaii
Tectono-magmatic processes investigated at deep-water flanks of Hawaiian volcanoes
Hydrothermal alteration mineralogy of SOH drill holes, Kilauea East Rift Zone geothermal area, Hawaii
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Tohoku-Oki Earthquake Tsunami Runup and Inundation Data for Sites Around the Island of Hawaiʻi
At 0546 U.t.c. March 11, 2011, a Mw 9.0 ("great") earthquake occurred near the northeast coast of Honshu Island, Japan, generating a large tsunami that devastated the east coast of Japan and impacted many far-flung coastal sites around the Pacific Basin. After the earthquake, the Pacific Tsunami Warning Center issued a tsunami alert for the State of Hawaii, followed by a tsunami-warning notice froAuthorsFrank A. Trusdell, Amy Chadderton, Graham Hinchliffe, Andrew Hara, Brent Patenge, Tom WeberMauna Loa--history, hazards and risk of living with the world's largest volcano
Mauna Loa on the Island Hawaiʻi is the world’s largest volcano. People residing on its flanks face many hazards that come with living on or near an active volcano, including lava flows, explosive eruptions, volcanic smog, damaging earthquakes, and local tsunami (giant seawaves). The County of Hawaiʻi (Island of Hawaiʻi) is the fastest growing County in the State of Hawaii. Its expanding populationAuthorsFrank A. TrusdellCatalog of Tephra samples from Kilauea's summit eruption, March-December 2008
The opening of a new vent within Halema'uma'u Crater in March 2008 ended a 26-year period of no eruptive activity at the summit of Kilauea Volcano. It also heralded the first explosive activity at Kilauea's summit since 1924 and the first of eight discrete explosive events in 2008. At the onset of the eruption, the Hawaiian Volcano Observatory (HVO) initiated a rigorous program of sample collectioAuthorsKelly M. Wooten, Carl R. Thornber, Tim R. Orr, Jennifer F. Ellis, Frank A. TrusdellNew and revised 14C dates for Hawaiian surface lava flows: Paleomagnetic and geomagnetic implications
Radiocarbon dates have been obtained for 30 charcoal samples corresponding to 27 surface lava flows from the Mauna Loa and Kilauea volcanoes on the Island of Hawaii. The submitted charcoal was a mixture of fresh and archived material. Preparation and analysis was undertaken at the NERC Radiocarbon Laboratory in Glasgow, Scotland, and the associated SUERC Accelerator Mass Spectrometry facility. TheAuthorsNicola Pressling, Frank A. Trusdell, David GubbinsCrisis GIS--Preparing for and responding to volcanic eruptions in the United States
No abstract available.AuthorsD.W. Ramsey, J.E. Robinson, S. P. Schilling, J.R. Schaefer, Frank A. TrusdellDigital database of the geologic map of the Island of Hawai'i
This online publication (DS 144) provides the digital database for the printed map by Edward W. Wolfe and Jean Morris (I-2524-A; 1996). This digital database contains all the information used to publish U.S. Geological Survey Geologic Investigations Series I-2524-A (available only in paper form; see http://pubs.er.usgs.gov/pubs/i/i2524A). The database contains the distribution and relationships ofAuthorsFrank A. Trusdell, Edward W. Wolfe, Jean MorrisPerspectives on basaltic magma crystallization and differentiation: Lava-lake blocks erupted at Mauna Loa volcano summit, Hawaii
Explosive eruptions at Mauna Loa summit ejected coarse-grained blocks (free of lava coatings) from Moku'aweoweo caldera. Most are gabbronorites and gabbros that have 0–26 vol.% olivine and 1–29 vol.% oikocrystic orthopyroxene. Some blocks are ferrogabbros and diorites with micrographic matrices, and diorite veins (≤2 cm) cross-cut some gabbronorites and gabbros. One block is an open-textured dunitAuthorsRenee L. McCarter, R.V. Fodor, Frank A. TrusdellDistribution, 14C chronology, and paleomagnetism of latest Pleistocene and Holocene lava flows at Haleakala volcano, Island of Maui, Hawai'i: A revision of lava flow hazard zones
New mapping and 60 new radiocarbon ages define the age and distribution of latest Pleistocene and Holocene (past 13,000 years) lava flows at Haleakalā volcano, Island of Maui. Paleomagnetic directions were determined for 118 sites, of which 89 are in lava flows younger than 13,000 years. The paleomagnetic data, in conjunction with a reference paleosecular variation (PSV) curve for the Hawaiian IslAuthorsDavid R. Sherrod, Jonathan T. Hagstrum, John P. McGeehin, Duane E. Champion, Frank A. TrusdellPreliminary Geologic Map of Mount Pagan Volcano, Pagan Island, Commonwealth of the Northern Mariana Islands
Pagan Island is the subaerial portion of two adjoining Quaternary stratovolcanoes near the middle of the active Mariana Arc, [FAT1]north of Saipan. Pagan and the other volcanic islands that constitute part of the Arc form the northern half of the East Mariana Ridge[FAT2], which extends about 2-4 km above the ocean floor. The > 6-km-deep Mariana Trench adjoins the East Mariana Ridge on the east, anAuthorsFrank A. Trusdell, Richard B. Moore, Maurice K. SakoEmplacement and inflation structures of submarine and subaerial pahoehoe lavas from Hawaii
Features of subaerial pahoehoe tumuli from Kilauea and Mauna Loa Volcanoes in Hawaii and subaqueous flow lobes from Loihi Seamount off Hawaii and north of Oahu Island document the controlling factors of flow-lobe formation. Studied subaerial flow-lobe tumuli consist of uplifted pahoehoe crust, formed from coalesced flow lobes. The south rift zone of Loihi has abundant conical lava mounds and terraAuthorsSusumu Umino, Sumie Obata, Peter W. Lipman, John R. Smith, Tsugio Shibata, Jiro Naka, Frank A. TrusdellTectono-magmatic processes investigated at deep-water flanks of Hawaiian volcanoes
Hawaiian volcanoes are exceptional examples of intraplate hotspot volcanism. Hotspot volcanoes, which frequently host large eruptions and related earthquakes, flank‐failure landslides, and associated tsunamis, can present severe hazards to populated regions. Many studies have focused on subaerial parts of Hawaiian volcanoes, but the deep‐water flanks of the edifices, which can reach 5700 m below sAuthorsJ. Naka, E Takahasi, D. Clague, Takeshi Hanyu, E. Herrero-Bervera, J. Ishibashi, Osamu Ishizuka, K. Johnson, T. Kanamatsu, I. Kaneoka, Peter W. Lipman, A. Malahoff, Gary M. McMurtry, B. Midson, Jeff Moore, J. Morgan, T. Naganuma, K Nakajima, T Oomori, Aaron Pietruszka, Satake Kenji, David R. Sherrod, Tsugio Shibata, K Shinozaki, Thomas W. Sisson, John R. Smith, S. Takarada, C. Thomber, Frank A. Trusdell, Nohiro Tsuboyama, T. Ui, Susumu Umino, K. Uto, H. YokoseHydrothermal alteration mineralogy of SOH drill holes, Kilauea East Rift Zone geothermal area, Hawaii
Thirty-eight hydrothermal minerals were identified from 356 drill-core specimens that were obtained from three Scientific Observation Holes (SOH-1, SOH-2, and SOH-4) drilled along the lower East Rift Zone (ERZ) of Kilauea Volcano, Hawaii. The minerals formed during alteration of basaltic rocks and glass by hot, circulating, waters in aquifers consisting of variable mixtures of meteoric water and sAuthorsKeith E. Bargar, Terry E.C. Keith, Frank A. Trusdell, S.R. Evans, M.L. Sykes - News
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