Physical properties of ammonian-rich ice: Application to Titan

Ralph D. Lorenz; Sarah E. Shandera

doi:10.1029/2000GL012199

Physical properties of ammonian-rich ice: Application to Titan

Ralph D. Lorenz, Sarah E. Shandera

Research output: Contribution to journal › Article › peer-review

49 Scopus citations

Abstract

We report simple measurements of the physical properties of frozen aqueous solutions of NH₃ down to 80 K. These measurements are relevant for the geophysics of icy satellites and Titan in particular. We find that the thermal conductivity of NH₃-rich (∼10-30%) water ice is 1-2 Wm^-1K^-1, or 2-3 times lower than that of pure water ice. We find evidence for significant microwave absorptivity in NH₃-rich ice - even at 100K - and that the electrical properties are very strongly temperature-dependent. At around 100K the Young's Modulus for NH₃-free and NH₃-rich ice appears to be about the same, while at 160K the NH₃-rich ice is 10x more compliant.

Original language	English (US)
Pages (from-to)	215-218
Number of pages	4
Journal	Geophysical Research Letters
Volume	28
Issue number	2
DOIs	https://doi.org/10.1029/2000GL012199
State	Published - Jan 15 2001

All Science Journal Classification (ASJC) codes

Geophysics
Earth and Planetary Sciences(all)

Access to Document

10.1029/2000GL012199

Cite this

@article{01f004db71e445d4984e7c0ae9fdddd6,

title = "Physical properties of ammonian-rich ice: Application to Titan",

abstract = "We report simple measurements of the physical properties of frozen aqueous solutions of NH3 down to 80 K. These measurements are relevant for the geophysics of icy satellites and Titan in particular. We find that the thermal conductivity of NH3-rich (∼10-30%) water ice is 1-2 Wm-1K-1, or 2-3 times lower than that of pure water ice. We find evidence for significant microwave absorptivity in NH3-rich ice - even at 100K - and that the electrical properties are very strongly temperature-dependent. At around 100K the Young's Modulus for NH3-free and NH3-rich ice appears to be about the same, while at 160K the NH3-rich ice is 10x more compliant.",

author = "Lorenz, {Ralph D.} and Shandera, {Sarah E.}",

year = "2001",

month = jan,

day = "15",

doi = "10.1029/2000GL012199",

language = "English (US)",

volume = "28",

pages = "215--218",

journal = "Geophysical Research Letters",

issn = "0094-8276",

publisher = "American Geophysical Union",

number = "2",

}

TY - JOUR

T1 - Physical properties of ammonian-rich ice

T2 - Application to Titan

AU - Lorenz, Ralph D.

AU - Shandera, Sarah E.

PY - 2001/1/15

Y1 - 2001/1/15

N2 - We report simple measurements of the physical properties of frozen aqueous solutions of NH3 down to 80 K. These measurements are relevant for the geophysics of icy satellites and Titan in particular. We find that the thermal conductivity of NH3-rich (∼10-30%) water ice is 1-2 Wm-1K-1, or 2-3 times lower than that of pure water ice. We find evidence for significant microwave absorptivity in NH3-rich ice - even at 100K - and that the electrical properties are very strongly temperature-dependent. At around 100K the Young's Modulus for NH3-free and NH3-rich ice appears to be about the same, while at 160K the NH3-rich ice is 10x more compliant.

AB - We report simple measurements of the physical properties of frozen aqueous solutions of NH3 down to 80 K. These measurements are relevant for the geophysics of icy satellites and Titan in particular. We find that the thermal conductivity of NH3-rich (∼10-30%) water ice is 1-2 Wm-1K-1, or 2-3 times lower than that of pure water ice. We find evidence for significant microwave absorptivity in NH3-rich ice - even at 100K - and that the electrical properties are very strongly temperature-dependent. At around 100K the Young's Modulus for NH3-free and NH3-rich ice appears to be about the same, while at 160K the NH3-rich ice is 10x more compliant.

UR - http://www.scopus.com/inward/record.url?scp=0035862081&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0035862081&partnerID=8YFLogxK

U2 - 10.1029/2000GL012199

DO - 10.1029/2000GL012199

M3 - Article

AN - SCOPUS:0035862081

SN - 0094-8276

VL - 28

SP - 215

EP - 218

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 2

ER -

Physical properties of ammonian-rich ice: Application to Titan

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this