William M. Dunne’s research while affiliated with The University of Tennessee Medical Center at Knoxville and other places

What is this page?


This page lists works of an author who doesn't have a ResearchGate profile or hasn't added the works to their profile yet. It is automatically generated from public (personal) data to further our legitimate goal of comprehensive and accurate scientific recordkeeping. If you are this author and want this page removed, please let us know.

Publications (25)


Regional variations in observed fracture abundance and associated predictions for smaller fractures on Europa with implications for regional plume origins
  • Article

January 2023

·

10 Reads

Earth and Planetary Science Letters

Claire A. Mondro

·

Jeffrey E. Moersch

·

Josh Emery

·

William M. Dunne

Large fractures on Europa's surface have been extensively studied for the insight they provide into the evolution of the satellite's ice shell. The presence of small fractures has not been characterized on a global or regional scale because of the resolution limits in the current image data. However, if smaller fractures are present they could significantly increase the overall fracture abundance and influence the mechanical properties of the ice shell. Regional variability in this abundance would also impact the spatial heterogeneity of ice shell characteristics. To investigate the possible contribution of smaller fractures to the influence of the fracture network on the behavior of the ice lithosphere, we measure the surface length of visible fractures in regions on Europa's surface and calculate their length distributions and fracture intensities. These outcomes are extrapolated, using best-fit functions, to consider the possible abundance and role of smaller fractures in these networks. The analysis of the visible fractures sampled different geologic terrains and geographic regions to consider the effect of terrain type and location. Fracture abundance in observable populations shows some variation with terrain type. However, observable abundance also changes with image resolution, indicating that current data limit the interpretation of visible fracture populations. Typical log-normal, exponential, and power-law fracture network distributions, based on analysis of terrestrial fracture networks, were considered as methods for extrapolating the observed fracture populations. Power-law was found to be the most appropriate extrapolation choice. It was also found to predict observed fracture abundance in one sample region with a smaller sub-region that had locally higher image resolution. Applying a power-law extrapolation for the fracture abundance as a function of length, we predict fracture abundance characteristics that are up to two orders of magnitude higher than abundance of observed fractures, and which vary by an order of magnitude between regions. Thus, the predicted fracture populations indicate that abundant small fractures would contribute significantly to the mechanical behavior of the ice lithosphere and create regional variations in fracture abundance. For example, where they are abundant, these smaller fractures could contribute to fracture networks providing localized migration pathways for plume activity on Europa. New image data from the Europa Clipper mission should enable fracture mapping at smaller scales to refine the roles of these networks and the smaller fractures on Europan lithospheric processes and rheology.


MICAH JOHN JESSUP’S CONTRIBUTIONS TO THE UNIVERSITY OF TENNESSEE-KNOXVILLE

January 2023

·

5 Reads

·

Robert D. Hatcher

·

·

[...]

·

Tuesday, 17 October 2023 4:25 PM - 4:40 PM 326 (3, David L Lawrence Convention Center) Abstract Micah J. Jessup has been an outstanding and highly valued faculty member in the Department of Earth and Planetary Sciences during his 16-year career at the University of Tennessee, Knoxville (UTK). Micah arrived at UTK in 2007 as an assistant professor, after completing his Ph.D. at Virginia Tech. He immediately addressed his responsibilities, succeeded at becoming an effective teacher and researcher, developed collaborations with faculty at other universities, and continued to work in the Himalayas, where he conducted his dissertation research, with National Science Foundation (NSF) support, and later the Cordillera Blanca in Peru and in the Homestake shear zone in Colorado. The outcomes of his diverse research on vorticity analysis, timing and geometry of Himalayan extension, interplay of Himalayan denudation and mid-crustal flow, and Andean fluids and tectonic interactions with the underlying slab attracted outstanding students and enriched both his undergraduate and graduate teaching. Micah advised four PhD and ten MS students, as well as mentored more than 16 undergraduates. By the time of his retirement, having been awarded tenure and promoted to associate professor, Micah had published over 30 papers in refereed journals, and was supported by several grants from NSF and other sources. He and Bob Hatcher had many common interests, and shared teaching graduate structure and tectonics courses. His quiet, even demeanor also made him a popular member of the faculty, who enjoyed their associations with him and wife Laura. In summary, we honor Micah’s exemplary career contributions to UTK and the scientific community. Micah has been a truly outstanding colleague. He has made significant research contributions that have expanded the scientific knowledge of mid-crustal processes and orogenic evolution. He has been an inspiring teacher and mentor in the classroom and in research. He has made impactful contributions to the department, university, and community. Throughout his career, he has always strived for excellence and to reach his highest potential—sometimes literally on very tall mountains.


Planetary Geoscience

July 2019

·

382 Reads

·

15 Citations

For many years, planetary science has been taught as part of the astronomy curriculum, from a very physics-based perspective, and from the framework of a tour of the Solar System - body by body. Over the past decades, however, spacecraft exploration and related laboratory research on extraterrestrial materials have given us a new understanding of planets and how they are shaped by geological processes. Based on a course taught at the University of Tennessee, Knoxville, this is the first textbook to focus on geologic processes, adopting a comparative approach that demonstrates the similarities and differences between planets, and the reasons for these. Profusely illustrated, and with a wealth of pedagogical features, this book provides an ideal capstone course for geoscience majors - bringing together aspects of mineralogy, petrology, geochemistry, volcanology, sedimentology, geomorphology, tectonics, geophysics and remote sensing.


6 - Planetary Heating and Differentiation

June 2019

·

7 Reads

For many years, planetary science has been taught as part of the astronomy curriculum, from a very physics-based perspective, and from the framework of a tour of the Solar System - body by body. Over the past decades, however, spacecraft exploration and related laboratory research on extraterrestrial materials have given us a new understanding of planets and how they are shaped by geological processes. Based on a course taught at the University of Tennessee, Knoxville, this is the first textbook to focus on geologic processes, adopting a comparative approach that demonstrates the similarities and differences between planets, and the reasons for these. Profusely illustrated, and with a wealth of pedagogical features, this book provides an ideal capstone course for geoscience majors - bringing together aspects of mineralogy, petrology, geochemistry, volcanology, sedimentology, geomorphology, tectonics, geophysics and remote sensing.


Glossary

June 2019

·

4 Reads

For many years, planetary science has been taught as part of the astronomy curriculum, from a very physics-based perspective, and from the framework of a tour of the Solar System - body by body. Over the past decades, however, spacecraft exploration and related laboratory research on extraterrestrial materials have given us a new understanding of planets and how they are shaped by geological processes. Based on a course taught at the University of Tennessee, Knoxville, this is the first textbook to focus on geologic processes, adopting a comparative approach that demonstrates the similarities and differences between planets, and the reasons for these. Profusely illustrated, and with a wealth of pedagogical features, this book provides an ideal capstone course for geoscience majors - bringing together aspects of mineralogy, petrology, geochemistry, volcanology, sedimentology, geomorphology, tectonics, geophysics and remote sensing.


7 - Unseen Planetary Interiors

June 2019

·

7 Reads

·

1 Citation

For many years, planetary science has been taught as part of the astronomy curriculum, from a very physics-based perspective, and from the framework of a tour of the Solar System - body by body. Over the past decades, however, spacecraft exploration and related laboratory research on extraterrestrial materials have given us a new understanding of planets and how they are shaped by geological processes. Based on a course taught at the University of Tennessee, Knoxville, this is the first textbook to focus on geologic processes, adopting a comparative approach that demonstrates the similarities and differences between planets, and the reasons for these. Profusely illustrated, and with a wealth of pedagogical features, this book provides an ideal capstone course for geoscience majors - bringing together aspects of mineralogy, petrology, geochemistry, volcanology, sedimentology, geomorphology, tectonics, geophysics and remote sensing.


1 - Exploring the Solar System

June 2019

·

21 Reads

For many years, planetary science has been taught as part of the astronomy curriculum, from a very physics-based perspective, and from the framework of a tour of the Solar System - body by body. Over the past decades, however, spacecraft exploration and related laboratory research on extraterrestrial materials have given us a new understanding of planets and how they are shaped by geological processes. Based on a course taught at the University of Tennessee, Knoxville, this is the first textbook to focus on geologic processes, adopting a comparative approach that demonstrates the similarities and differences between planets, and the reasons for these. Profusely illustrated, and with a wealth of pedagogical features, this book provides an ideal capstone course for geoscience majors - bringing together aspects of mineralogy, petrology, geochemistry, volcanology, sedimentology, geomorphology, tectonics, geophysics and remote sensing.


3 - More Toolkits for the Planetary Geoscientist:

June 2019

·

3 Reads

For many years, planetary science has been taught as part of the astronomy curriculum, from a very physics-based perspective, and from the framework of a tour of the Solar System - body by body. Over the past decades, however, spacecraft exploration and related laboratory research on extraterrestrial materials have given us a new understanding of planets and how they are shaped by geological processes. Based on a course taught at the University of Tennessee, Knoxville, this is the first textbook to focus on geologic processes, adopting a comparative approach that demonstrates the similarities and differences between planets, and the reasons for these. Profusely illustrated, and with a wealth of pedagogical features, this book provides an ideal capstone course for geoscience majors - bringing together aspects of mineralogy, petrology, geochemistry, volcanology, sedimentology, geomorphology, tectonics, geophysics and remote sensing.


13 - Planetary Aeolian Processes and Landforms

June 2019

·

10 Reads

For many years, planetary science has been taught as part of the astronomy curriculum, from a very physics-based perspective, and from the framework of a tour of the Solar System - body by body. Over the past decades, however, spacecraft exploration and related laboratory research on extraterrestrial materials have given us a new understanding of planets and how they are shaped by geological processes. Based on a course taught at the University of Tennessee, Knoxville, this is the first textbook to focus on geologic processes, adopting a comparative approach that demonstrates the similarities and differences between planets, and the reasons for these. Profusely illustrated, and with a wealth of pedagogical features, this book provides an ideal capstone course for geoscience majors - bringing together aspects of mineralogy, petrology, geochemistry, volcanology, sedimentology, geomorphology, tectonics, geophysics and remote sensing.


16 - Astrobiology

June 2019

·

28 Reads

For many years, planetary science has been taught as part of the astronomy curriculum, from a very physics-based perspective, and from the framework of a tour of the Solar System - body by body. Over the past decades, however, spacecraft exploration and related laboratory research on extraterrestrial materials have given us a new understanding of planets and how they are shaped by geological processes. Based on a course taught at the University of Tennessee, Knoxville, this is the first textbook to focus on geologic processes, adopting a comparative approach that demonstrates the similarities and differences between planets, and the reasons for these. Profusely illustrated, and with a wealth of pedagogical features, this book provides an ideal capstone course for geoscience majors - bringing together aspects of mineralogy, petrology, geochemistry, volcanology, sedimentology, geomorphology, tectonics, geophysics and remote sensing.


Citations (4)


... The immediate surface of the Moon is comprised of a dry, fragmented, unconsolidated granular material called regolith, which has been formed via the physical weathering processes of impact gardening over billions of years [12,14]. Though regolith has differences to that of terrestrial soils, it still behaves as a granular material which can be modeled through classical soil mechanics [16]. ...

Reference:

Lunar Site Preparation Requirements for Construction of Infrastructure Elements
11 - Impact Cratering as a Geologic Process
  • Citing Article
  • June 2019

... Gravitational field is a fundamental property of any mass and in particular of planetary bodies (e.g. McSween et al. 2020;Angermann et al. 2022). Knowledge of this field is indispensable not only for advancing industry and science, but also for addressing broad range of societal issues, such as sustainable energy, environmental aspects, or infrastructure development. ...

Planetary Geoscience
  • Citing Book
  • July 2019

... Как известно, при пропускании тока через струю расплавленного металла возникают силы Ампера, приводящие к сжатию проводника. С другой стороны, температура кристаллизации для большинства металлов растет с ростом давления [1]. Если в области конца струи создать достаточно большое давление, то в этой области температура жидкого металла окажется ниже точки кристаллизации. ...

7 - Unseen Planetary Interiors
  • Citing Article
  • June 2019

... During the more and more detailed study of the satellite, various cryotectonic features have been observed in the icy crust of Dione, which are summarized in Table 1. Out of the different basic fault types (normal, reverse, and strike-slip faults), normal faults seem to be the most common, indicating an extensional stress field and resulting in the formation of various simple and more complex tectonic features, such as troughs, scarps, and the so-called horst and graben structure [2,4,14,15] (Table 1). ...

Shallow normal fault slopes on Saturnian icy satellites
  • Citing Article
  • December 2015