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Member Since 2006
Tim R. Orr
Research Geologist, U.S. Geological Survey Alaska Volcano Observatory
AGU Research
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Does the Lost Jim Lava Flow (Alaska) Really Preserve Evidence of Interaction with Permafrost?
DISTRIBUTED VOLCANIC FIELDS: SCIENCE, HISTORIES, AND HAZARDS POSTER
volcanology, geochemistry and petrology | 13 december 2023
Tim R. Orr, Jessica F. Larsen, Erika Rader, Willia...
The basaltic Lost Jim lava flow is the youngest member of the Imuruk Lake distributed volcanic field. The eruption of the well-preserved, inflated pho...
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The 1907 “Mystery” Ashfall on the Seward Peninsula, Alaska
POSTER SESSION C
general program | 21 september 2022
Tim R. Orr, Hans F. Schwaiger
During November 24–28, 1907, volcanic ash fell across the Seward Peninsula of western Alaska—an area 10s of thousands of square kilometers in size—but...
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The Birth of a Hawaiian Fissure Eruption
JOURNAL OF GEOPHYSICAL RESEARCH: SOLID EARTH
11 january 2021
Bruce F. Houghton, Caroline M. Tisdale, Edward W. ...
Most basaltic explosive eruptions intensify abruptly, allowing little time to document processes at the start of eruption. One opportunity came wit...
Insights Into Pāhoehoe Lava Emplacement Using Visible and Thermal Structure-From-Motion Photogrammetry
JOURNAL OF GEOPHYSICAL RESEARCH: SOLID EARTH
29 june 2019
Sebastien Biass, Tim R. Orr, Bruce F. Houghton, Ma...
We present the evolution over 3 months of a 2016–2017 pāhoehoe flow at Kīlauea as it changed from a narrow sheet flow into a compou...
The First 100 Minutes in the Life of an Hawaiian Fissure: Segment 8 on Kīlauea’s Lower East Rift Zone
FALL MEETING 2018
13 december 2018
Bruce F. Houghton, Tim R. Orr, Caroline M. Tisdale...
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Partitioning of pyroclasts between ballistic transport and a convective plume: Kīlauea volcano, 19 March 2008
JOURNAL OF GEOPHYSICAL RESEARCH: SOLID EARTH
06 may 2017
Bruce F. Houghton, Donald A. Swanson, Sebastien Bi...
We describe the discrete ballistic and wind‐advected products of a small, but exceptionally well‐characterized, explosive eruption of w...
Integrating puffing and explosions in a general scheme for Strombolian-style activity
JOURNAL OF GEOPHYSICAL RESEARCH: SOLID EARTH
22 march 2017
Damien Gaudin, Jacopo Taddeucci, Piergiorgio Scarl...
Strombolian eruptions are among the most common subaerial styles of explosive volcanism worldwide. Distinctive features of each volcano lead to a c...
Spattering activity at Halemaʻumaʻu in 2015 and the transition between Hawaiian and Strombolian eruptions
FALL MEETING 2016
16 december 2016
Bianca G. Mintz, Rebecca Carey, Elisabetta Del Be...
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