A passive probe for subsurface oceans and liquid water in Jupiter's icy moons

被引：40

作者：

Romero-Wolf, Andrew ^{[1
]}

Vance, Steve ^{[1
]}

Maiwald, Frank ^{[1
]}

Heggy, Essam ^{[1
]}

Ries, Paul ^{[1
]}

Liewer, Kurt ^{[1
]}

机构：

[1] CALTECH, Jet Prop Lab, Pasadena, CA 91101 USA

来源：

ICARUS | 2015年 / 248卷

关键词：

Jupiter; Europa; Ganymede; Ices; Radar observations; INTERNAL STRUCTURE; CONSTRAINTS; SATELLITES; THICKNESS; EUROPA; MODELS; SHELL; STATE;

D O I：

10.1016/j.icarus.2014.10.043

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We describe an interferometric reflectometer method for passive detection of subsurface oceans and liquid water in jovian icy moons using Jupiter's decametric radio emission (DAM). The DAM flux density exceeds 3000 times the galactic background in the neighborhood of the jovian icy moons, providing a signal that could be used for passive radio sounding. An instrument located between the icy moon and Jupiter could sample the DAM emission along with its echoes reflected in the ice layer of the target moon. Cross-correlating the direct emission with the echoes would provide a measurement of the ice shell thickness along with its dielectric properties. The interferometric reflectometer provides a simple solution to sub-jovian radio sounding of ice shells that is complementary to ice penetrating radar measurements better suited to measurements in the anti-jovian hemisphere that shadows Jupiter's strong decametric emission. The passive nature of this technique also serves as risk reduction in case of radar transmitter failure. The interferometric reflectometer could operate with electrically short antennas, thus extending ice depth measurements to lower frequencies, and potentially providing a deeper view into the ice shells of jovian moons. (C) 2014 Elsevier Inc. All rights reserved.

引用

页码：463 / 477

页数：15

共 37 条

[31] Reactive scattering of water group ions on ice surfaces with relevance to Saturn's icy moons
Grayson, Robert W.
Goddard, William A., III
Giapis, Konstantinos P.
ICARUS, 2022, 379
[32] Detecting Darwinism from Molecules in the Enceladus Plumes, Jupiter's Moons, and Other Planetary Water Lagoons
Benner, Steven A.
ASTROBIOLOGY, 2017, 17 (09) : 840 - 851
[33] Observability of Ganymede's gravity anomalies related to surface features by the 3GM experiment onboard ESA's JUpiter ICy moons Explorer (JUICE) mission
Fabrizio, De Marchi
Gaetano, Di Achille
Giuseppe, Mitri
Paolo, Cappuccio
Ivan, Di Stefano
Mauro, Di Benedetto
Luciano, Iess
ICARUS, 2021, 354
[34] The Earth transiting the Sun as seen from Jupiter's moons: detection of an inverse Rossiter-McLaughlin effect produced by the opposition surge of the icy Europa
Molaro, P.
Barbieri, M.
Monaco, L.
Zaggia, S.
Lovis, C.
MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, 2015, 453 (02) : 1684 - 1691
[35] The Earth transiting the Sun as seen from Jupiter's moons: Detection of an inverse Rossiter-McLaughlin effect produced by the opposition surge of the icy Europa
INAF, Osservatorio Astronomico di Trieste, Via G.B. Tiepolo 11, Trieste
I-34143, Italy
不详
不详
837-0134, Chile
不详
I-35122, Italy
不详
CH-1290, Switzerland
Mon. Not. R. Astron. Soc., 2 (1684-1691):
[36] Simulating Jupiter's weather layer. Part II: Passive ammonia and water cycles
Young, Roland M. B.
Read, Peter L.
Wang, Yixiong
ICARUS, 2019, 326 : 253 - 268
[37] Cloud liquid water path from satellite-based passive microwave observations: A new climatology over the global oceans
O'Dell, Christopher W.
Wentz, Frank J.
Bennartz, Ralf
JOURNAL OF CLIMATE, 2008, 21 (08) : 1721 - 1739

← 1 2 3 4 →