Fluid resonance in elastic-walled englacial transport networks
Fluid resonance in elastic-walled englacial transport networks
复制标题
弹性壁冰川运输网络中的流体共振
DOI:
10.1017/jog.2021.48
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发表时间:
2021
影响因子:
3.4
通讯作者:
Karlstrom, Leif
中科院分区:
文献类型:
--
作者:
McQuillan, Maria;Karlstrom, Leif
Englacial water transport is an integral part of the glacial hydrologic system, yet the geometry of englacial structures remains largely unknown. In this study, we explore the excitation of fluid resonance by small amplitude waves as a probe of englacial geometry. We model a hydraulic network consisting of one or more tabular cracks that intersect a cylindrical conduit, subject to oscillatory wave motion initiated at the water surface. Resulting resonant frequencies and quality factors are diagnostic of fluid properties and geometry of the englacial system. For a single crack–conduit system, the fundamental mode involves gravity-driven fluid sloshing between the conduit and the crack, at frequencies between 0.02 and 10 Hz for typical glacial parameters. Higher frequency modes include dispersive Krauklis waves generated within the crack and tube waves in the conduit. But we find that crack lengths are often well constrained by fundamental mode frequency and damping rate alone for settings that include alpine glaciers and ice sheets. Branching crack geometry and dip, ice thickness and source excitation function help define limits of crack detectability for this mode. In general, we suggest that identification of eigenmodes associated with wave motion in time series data may provide a pathway toward inferring englacial hydrologic structures.
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DOI:
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发表时间:
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期刊:
影响因子:
--
作者:
M. West;C. Larsen;M. Truffer;S. O’Neel;Laura Leblanc
通讯作者:
Laura Leblanc
影响因子:
2.4
作者:
R. Burridge;S. Kostek;A. Kurkjian
通讯作者:
A. Kurkjian
影响因子:
3.4
作者:
B. Kulessa;B. Hubbard;M. Williamson;Giles H. Brown
通讯作者:
Giles H. Brown
影响因子:
3.7
作者:
L. Karlstrom;E. Dunham
通讯作者:
E. Dunham
DOI:
10.1029/jb093ib05p04375
发表时间:
1988-05-10
期刊:
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS
影响因子:
--
作者:
CHOUET, B
通讯作者:
CHOUET, B