Zobrazeno 1 - 10
of 19
pro vyhledávání: '"Matthew Varnam"'
Autor:
Brett B. Carr, Matthew Varnam, Nathan Hadland, Jahnavi Shah, Joana R. C. Voigt, Samantha Gwizd, Kathryn M. Stack, Fred Calef, Raymond Francis, Udit Basu, Baldur Björnsson, Colin X. Chen, Elisa Dong, Jeffrey E. Moersch, Michael Phillips, Joshua Springer, Catherine D. Neish, Christopher W. Hamilton
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 10, p 231 (2024)
Planetary analog mission simulations are essential for testing science operations strategies and technologies. They also teach us how to use terrestrial analogs to inform studies of extraterrestrial environments. Unoccupied aircraft systems (UASs) ha
Externí odkaz:
https://doaj.org/article/9df3ce96cd294c84a5f8fea22ce09736
Autor:
Samantha Gwizd, Kathryn M. Stack, Raymond Francis, Fred Calef, Brett B. Carr, Chris Langley, Jamie Graff, Þorsteinn Hanning Kristinsson, Vilhjálmur Páll Thorarensen, Eiríkur Bernharðsson, Michael Phillips, Matthew Varnam, Nathan Hadland, Jahnavi Shah, Jeffrey Moersch, Udit Basu, Joana R. C. Voigt, Christopher W. Hamilton
Publikováno v:
The Planetary Science Journal, Vol 5, Iss 8, p 172 (2024)
The Rover–Aerial Vehicle Exploration Network project field-tested planetary mission operations within a Mars analog environment in Iceland using stand-alone rover and helicopter architectures. Mission planning, implementation, and results are repor
Externí odkaz:
https://doaj.org/article/e10999d0a5b2499e9bc078d71c7aaf3b
Autor:
Jean-François Smekens, Tamsin A. Mather, Mike R. Burton, Alessandro La Spina, Khristopher Kabbabe, Benjamin Esse, Matthew Varnam, Roy G. Grainger
Publikováno v:
Frontiers in Earth Science, Vol 10 (2023)
Field-portable Open Path Fourier Transform Infrared (OP-FTIR) spectrometers can be used to remotely measure the composition of volcanic plumes using absorption spectroscopy, providing invaluable data on total gas emissions. Quantifying the temporal e
Externí odkaz:
https://doaj.org/article/2b35b64a9c96483d9fe03556789eb53f
Publikováno v:
Frontiers in Earth Science, Vol 10 (2022)
Multi-disciplinary volcanic gas observations, including FTIR, Multi-GAS, and Alkali filter pack, were made at Masaya Volcano, Nicaragua, in January 2018. During the observation period, a lava lake was present, and the majority of the volcanic gases w
Externí odkaz:
https://doaj.org/article/0bc7b92f9fab4e83b3affa047426fd2c
Autor:
Matthew Varnam, Mike Burton, Ben Esse, Ryunosuke Kazahaya, Giuseppe Salerno, Tommaso Caltabiano, Martha Ibarra
Publikováno v:
Frontiers in Earth Science, Vol 8 (2020)
High precision and accuracy in volcanic SO2 emission rate quantification is critical for eruption forecasting and, in combination with in-plume gas ratios, quantifying global volcanic emission inventories. Light dilution, where scattering of ultravio
Externí odkaz:
https://doaj.org/article/7bacd2d05e8b47318842b63112b25169
Autor:
Ben Esse, Michael Burton, Matthew Varnam, Ryunosuke Kazahaya, Paul A. Wallace, Felix Von-Aulock, Yan Lavallée, Giuseppe Salerno, Simona Scollo, Hugh Coe
Publikováno v:
Scientific Reports, Vol 8, Iss 1, Pp 1-9 (2018)
Abstract Even modest ash-rich volcanic eruptions can severely impact a range of human activities, especially air travel. The dispersal of ash in these eruptions depends critically on aggregation and sedimentation processes – however these are diffi
Externí odkaz:
https://doaj.org/article/3ee0f01acbfc4ebc8e901965f7b48bee
Publikováno v:
Remote Sensing, Vol 13, Iss 5, p 935 (2021)
SO2 cameras are able to measure rapid changes in volcanic emission rate but require accurate calibrations and corrections to convert optical depth images into slant column densities. We conducted a test at Masaya volcano of two SO2 camera calibration
Externí odkaz:
https://doaj.org/article/e46437cf0eb64900bef2bb2c84d74f6d
Publikováno v:
Remote Sensing, Vol 10, Iss 1, p 125 (2018)
CO2 is the second most abundant volatile species of degassing magma. CO2 fluxes carry information of incredible value, such as periods of volcanic unrest. Ground-based laser remote sensing is a powerful technique to measure CO2 fluxes in a spatially
Externí odkaz:
https://doaj.org/article/0052cb1f5e7e4682ae4a60d3811e06d8
Autor:
Ben Esse, Mike Burton, Catherine Hayer, Rodrigo Contreras-Arratia, Thomas Christopher, Erouscilla P. Joseph, Matthew Varnam, Chris Johnson
Publikováno v:
Geological Society, London, Special Publications. 539
Determining SO 2 emission time-series from explosive eruptions can provide important insights into the driving magmatic processes, however accurate measurements are difficult to collect. Satellite-based platforms provide SO 2 imagery, however transla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c380996359c9e8945c73f7853b7d8e2
https://doi.org/10.1144/sp539-2022-77
https://doi.org/10.1144/sp539-2022-77
Autor:
Nicolas Theys, Christophe Lerot, Hugues Brenot, Jeroen van Gent, Isabelle De Smedt, Lieven Clarisse, Mike Burton, Matthew Varnam, Catherine Hayer, Benjamin Esse, Michel Van Roozendael
Knowledge of sulfur dioxide layer height (SO2 LH) is important to understand volcanic eruption processes, the climate impact of SO2 emissions and to mitigate volcanic risk for civil aviation. However, the estimation of SO2 LH from ground-based instru
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::679bfa03d4076612b5c52585a6b1b977
https://amt.copernicus.org/articles/15/4801/2022/
https://amt.copernicus.org/articles/15/4801/2022/
