Zobrazeno 1 - 10
of 249
pro vyhledávání: '"J, Motyka"'
Autor:
Nicole Abib, David A. Sutherland, Jason M. Amundson, Dan Duncan, Emily F. Eidam, Rebecca H. Jackson, Christian Kienholz, Mathieu Morlighem, Roman J. Motyka, Jonathan D. Nash, Bridget Ovall, Erin C. Pettit
Publikováno v:
Annals of Glaciology, Vol 64, Pp 1-12 (2023)
Frontal ablation, the combination of submarine melting and iceberg calving, changes the geometry of a glacier's terminus, influencing glacier dynamics, the fate of upwelling plumes and the distribution of submarine meltwater input into the ocean. Dir
Externí odkaz:
https://doaj.org/article/8a724f67bdcd4b6bb16595b09e827016
Autor:
J. M. Cusack, R. H. Jackson, J. D. Nash, E. Skyllingstad, E. C. Pettit, D. A. Sutherland, R. J. Motyka, J. M. Amundson
Publikováno v:
Geophysical Research Letters, Vol 50, Iss 12, Pp n/a-n/a (2023)
Abstract Submarine melting has been implicated in the accelerated retreat of marine‐terminating glaciers globally. Energetic ocean flows, such as subglacial discharge plumes, are known to enhance submarine melting in their immediate vicinity. Using
Externí odkaz:
https://doaj.org/article/3445109bc0ff425193ce4ae915c8248d
Publikováno v:
Journal of Glaciology, Vol 67, Pp 204-218 (2021)
The recently-advancing Taku Glacier is excavating subglacial sediments at high rates over multi-decadal timescales. However, sediment redistribution over shorter timescales remains unquantified. We use a variety of methods to study subglacial and pro
Externí odkaz:
https://doaj.org/article/3a6c44ad943e44e2b01954e601632912
Autor:
Jason M. Amundson, Christian Kienholz, Alexander O. Hager, Rebecca H. Jackson, Roman J. Motyka, Jonathan D. Nash, David A. Sutherland
Publikováno v:
Journal of Glaciology, Vol 66, Pp 577-590 (2020)
Ice mélange has been postulated to impact glacier and fjord dynamics through a variety of mechanical and thermodynamic couplings. However, observations of these interactions are very limited. Here, we report on glaciological and oceanographic data t
Externí odkaz:
https://doaj.org/article/a6957052ff05490297aae7e9a9423256
Autor:
W. Tanner Porter, Peter J. Motyka, Julie Wachara, Zachary A. Barrand, Zahraa Hmood, Marya McLaughlin, Kelsey Pemberton, Nathan C. Nieto
Publikováno v:
International Journal of Health Geographics, Vol 18, Iss 1, Pp 1-14 (2019)
Abstract Background Tick-borne disease is the result of spillover of pathogens into the human population. Traditionally, literature has focused on characterization of tick-borne disease pathogens and ticks in their sylvatic cycles. A limited amount o
Externí odkaz:
https://doaj.org/article/8855daa6667d47a4a988f32828a8d2ea
Autor:
CHRISTIAN KIENHOLZ, JASON M. AMUNDSON, ROMAN J. MOTYKA, REBECCA H. JACKSON, JOHN B. MICKETT, DAVID A. SUTHERLAND, JONATHAN D. NASH, DYLAN S. WINTERS, WILLIAM P. DRYER, MARTIN TRUFFER
Publikováno v:
Journal of Glaciology, Vol 65, Pp 195-211 (2019)
We present a workflow to track icebergs in proglacial fjords using oblique time-lapse photos and the Lucas-Kanade optical flow algorithm. We employ the workflow at LeConte Bay, Alaska, where we ran five time-lapse cameras between April 2016 and Septe
Externí odkaz:
https://doaj.org/article/9fe0fd4389f14ef6b160ac48b7455bc6
Autor:
TAYLOUR, W. D., JANKO, R., FORTENBERRY, D., GOALEN, M. J., WALLACE, T., BANKS, E. C., BINTLIFF, J. L., BISEL, S., BLITZER, H., DUHIG, C., FRENCH, E. B., GALE, N. H., HOFFMANN, S. M. A., IJDO, M. J., JONES, G., JONES, R. E., KARDULIAS, P. N., MACGILLIVRAY, J. A., MOUNTJOY, P. A., MOURER-CHAUVIRÉ, C., NICODEMUS, A., REESE, D. S., ROBINSON, V. J., ROSE, M. J., SANDERS, G. D. R., SANDERS, J. MOTYKA, STEWART, B. H. I. H., STOS, Z. A., TOMLINSON, J. E., WHITBREAD, I. K., ZERNER, C.
Publikováno v:
The British School at Athens. Supplementary Volumes, 2008 Jan 01(44), iv-644.
Externí odkaz:
https://www.jstor.org/stable/40856085
Autor:
ROMAN J. MOTYKA, RYAN CASSOTTO, MARTIN TRUFFER, KRISTIAN K. KJELDSEN, DIRK VAN AS, NIELS J. KORSGAARD, MARK FAHNESTOCK, IAN HOWAT, PETER L. LANGEN, JOHN MORTENSEN, KUNUK LENNERT, SØREN RYSGAARD
Publikováno v:
Journal of Glaciology, Vol 63, Pp 288-308 (2017)
We assess ice loss and velocity changes between 1985 and 2014 of three tidewater and five-land terminating glaciers in Godthåbsfjord (Nuup Kangerlua), Greenland. Glacier thinning accounted for 43.8 ± 0.2 km3 of ice loss, equivalent to 0.10 mm eusta
Externí odkaz:
https://doaj.org/article/760060607439430c8694dae951c7fff6
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Autor:
Nathan C Nieto, W Tanner Porter, Julie C Wachara, Thomas J Lowrey, Luke Martin, Peter J Motyka, Daniel J Salkeld
Publikováno v:
PLoS ONE, Vol 13, Iss 7, p e0199644 (2018)
Tick-borne pathogens are increasing their range and incidence in North America as a consequence of numerous factors including improvements in diagnostics and diagnosis, range expansion of primary vectors, changes in human behavior, and an increasing
Externí odkaz:
https://doaj.org/article/72149e202b3e4d7290d575ad6dc4e258