Aarhus University Seal / Aarhus Universitets segl

Jens Jacob Iversen

Laboratory investigations of the physical state of CO2 ice in a simulated Martian environment

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Standard

Laboratory investigations of the physical state of CO2 ice in a simulated Martian environment. / Portyankina, G.; Merrison, J.; Iversen, J. J.; Yoldi, Z.; Hansen, C. J.; Aye, K. M.; Pommerol, A.; Thomas, N.

I: Icarus, Bind 322, Nr. April, 2019, s. 210-220.

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

Harvard

Portyankina, G, Merrison, J, Iversen, JJ, Yoldi, Z, Hansen, CJ, Aye, KM, Pommerol, A & Thomas, N 2019, 'Laboratory investigations of the physical state of CO2 ice in a simulated Martian environment', Icarus, bind 322, nr. April, s. 210-220. https://doi.org/10.1016/j.icarus.2018.04.021

APA

Portyankina, G., Merrison, J., Iversen, J. J., Yoldi, Z., Hansen, C. J., Aye, K. M., Pommerol, A., & Thomas, N. (2019). Laboratory investigations of the physical state of CO2 ice in a simulated Martian environment. Icarus, 322(April), 210-220. https://doi.org/10.1016/j.icarus.2018.04.021

CBE

MLA

Vancouver

Author

Portyankina, G. ; Merrison, J. ; Iversen, J. J. ; Yoldi, Z. ; Hansen, C. J. ; Aye, K. M. ; Pommerol, A. ; Thomas, N. / Laboratory investigations of the physical state of CO2 ice in a simulated Martian environment. I: Icarus. 2019 ; Bind 322, Nr. April. s. 210-220.

Bibtex

@article{a620238690b347e492d1a905f83833fc,
title = "Laboratory investigations of the physical state of CO2 ice in a simulated Martian environment",
abstract = "We have experimentally investigated CO2 ice condensation under conditions similar to those expected in the Martian polar areas using the Environmental Wind Tunnel of Aarhus University in the framework of Trans-National Access opportunities within the EuroPlanet Research Infrastructure. Our goal was to condense CO2 directly from the chamber's atmosphere onto a specially designed cooling plate. We investigated ranges of temperatures and pressures similar to those in Martian polar areas, observed the texture of the created CO2 ice layer, and measured its optical properties. Most importantly, we find that under conditions usual for Martian polar areas in fall and winter, CO2 ice always deposits as a translucent slab. The maximum thickness of the ice that we have achieved approached 2 cm and this CO2 slab ice layer was either transparent or highly translucent. Under significantly lower temperatures or in states away from equilibrium (for example, when CO2 gas input into the chamber was fast and created over-pressure) CO2 deposited as different crystalline structures. In this case, when a thick layer was created, it was not visually transparent. However, even in those cases it still retains some level of translucency. Our results will advance the analysis of remote-sensing data related to CO2 ice, Mars{\textquoteright} seasonal cycles, and various models considering CO2 ice condensation-sublimation related processes.",
keywords = "CARBON-DIOXIDE, EROSION, HIRISE OBSERVATIONS, POLAR, Planetary ices, Polar caps, Polar geology, REGIONS, SOLID CO2, SUBLIMATION-DRIVEN ACTIVITY",
author = "G. Portyankina and J. Merrison and Iversen, {J. J.} and Z. Yoldi and Hansen, {C. J.} and Aye, {K. M.} and A. Pommerol and N. Thomas",
year = "2019",
doi = "10.1016/j.icarus.2018.04.021",
language = "English",
volume = "322",
pages = "210--220",
journal = "Icarus",
issn = "0019-1035",
publisher = "Elsevier",
number = "April",

}

RIS

TY - JOUR

T1 - Laboratory investigations of the physical state of CO2 ice in a simulated Martian environment

AU - Portyankina, G.

AU - Merrison, J.

AU - Iversen, J. J.

AU - Yoldi, Z.

AU - Hansen, C. J.

AU - Aye, K. M.

AU - Pommerol, A.

AU - Thomas, N.

PY - 2019

Y1 - 2019

N2 - We have experimentally investigated CO2 ice condensation under conditions similar to those expected in the Martian polar areas using the Environmental Wind Tunnel of Aarhus University in the framework of Trans-National Access opportunities within the EuroPlanet Research Infrastructure. Our goal was to condense CO2 directly from the chamber's atmosphere onto a specially designed cooling plate. We investigated ranges of temperatures and pressures similar to those in Martian polar areas, observed the texture of the created CO2 ice layer, and measured its optical properties. Most importantly, we find that under conditions usual for Martian polar areas in fall and winter, CO2 ice always deposits as a translucent slab. The maximum thickness of the ice that we have achieved approached 2 cm and this CO2 slab ice layer was either transparent or highly translucent. Under significantly lower temperatures or in states away from equilibrium (for example, when CO2 gas input into the chamber was fast and created over-pressure) CO2 deposited as different crystalline structures. In this case, when a thick layer was created, it was not visually transparent. However, even in those cases it still retains some level of translucency. Our results will advance the analysis of remote-sensing data related to CO2 ice, Mars’ seasonal cycles, and various models considering CO2 ice condensation-sublimation related processes.

AB - We have experimentally investigated CO2 ice condensation under conditions similar to those expected in the Martian polar areas using the Environmental Wind Tunnel of Aarhus University in the framework of Trans-National Access opportunities within the EuroPlanet Research Infrastructure. Our goal was to condense CO2 directly from the chamber's atmosphere onto a specially designed cooling plate. We investigated ranges of temperatures and pressures similar to those in Martian polar areas, observed the texture of the created CO2 ice layer, and measured its optical properties. Most importantly, we find that under conditions usual for Martian polar areas in fall and winter, CO2 ice always deposits as a translucent slab. The maximum thickness of the ice that we have achieved approached 2 cm and this CO2 slab ice layer was either transparent or highly translucent. Under significantly lower temperatures or in states away from equilibrium (for example, when CO2 gas input into the chamber was fast and created over-pressure) CO2 deposited as different crystalline structures. In this case, when a thick layer was created, it was not visually transparent. However, even in those cases it still retains some level of translucency. Our results will advance the analysis of remote-sensing data related to CO2 ice, Mars’ seasonal cycles, and various models considering CO2 ice condensation-sublimation related processes.

KW - CARBON-DIOXIDE

KW - EROSION

KW - HIRISE OBSERVATIONS

KW - POLAR

KW - Planetary ices

KW - Polar caps

KW - Polar geology

KW - REGIONS

KW - SOLID CO2

KW - SUBLIMATION-DRIVEN ACTIVITY

UR - http://www.scopus.com/inward/record.url?scp=85048596347&partnerID=8YFLogxK

U2 - 10.1016/j.icarus.2018.04.021

DO - 10.1016/j.icarus.2018.04.021

M3 - Journal article

AN - SCOPUS:85048596347

VL - 322

SP - 210

EP - 220

JO - Icarus

JF - Icarus

SN - 0019-1035

IS - April

ER -