Physico-chemical phenomena in comets—I: Experimental study of snows in a cometary environment
TL;DR: In this paper, the existence and thennodynamic stability of clathrate hydrate of methane is checked in the 100°K temperature range, and its dissociation pressure is measured.
About: This article is published in Planetary and Space Science.The article was published on 1970-05-01. It has received 87 citations till now. The article focuses on the topics: Clathrate hydrate & Carbon dioxide clathrate.
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TL;DR: In this article, two models of the low temperature condensation accretion process for different extreme assumptions are investigated, and the results of these models are compared and their relevance to processes in the solar nebula is discussed.
325 citations
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01 Aug 1974
TL;DR: In this paper, a review of Gas Hydrates with Implication for Ocean Sediments is presented, where the authors discuss pathways and environmental requirements for biogenic gas production in the Ocean.
Abstract: Pathways and Environmental Requirements for Biogenic Gas Production in the Ocean.- Depth Distributions of Gases in Shallow Water Sediments.- Methane and Carbon Dioxide in Coastal Marsh Sediments.- Hydrocarbon Gas (Methane) in Canned Deep Sea Drilling Project Core Samples.- Dissolved Gases in Cariaco Trench Sediments: Anaerobic Diagenesis.- Isotopic Analysis of Gas from the Cariaco Trench Sediments.- The Origin and Distribution of Methane in Marine Sediments.- Geothermal Gases.- The Nature and Occurrence of Clathrate Hydrates.- Review of Gas Hydrates with Implication for Ocean Sediments.- Occurrence of Natural Gas Hydrates in Sedimentary Basins.- Experiments on Hydrocarbon Gas Hydrates in Unconsolidated Sand.- Effects of Gas Hydrates in Sediments.- Acoustics and Gas in Sediments: Applied Research Laboratories (ARL) Experience.- Gas Bubbles and the Acoustically Impenetrable, or Turbid, Character of Some Estuarine Sediments.- In Situ Indications of Gas Hydrate.- Pagoda Structures in Marine Sediments.- List of Contributors.
310 citations
TL;DR: In this paper, a stable-state thermal model for the icy satellites was constructed in which the energy released by radioactive decay in the interiors of the satellites is exactly balanced by the net radiative loss from their surfaces.
270 citations
TL;DR: In this article, the authors studied the trapping and release of H2, CO, CO2, CH4, Ar, and N2 by amorphous water ice under dynamic conditions, at low temperatures starting at 16°K, with gas pressure of 5 × 10−8−10−6 Torr.
238 citations
TL;DR: In this paper, the influence of micro-pores on the H2 recombination rate on H2O(as) in interstellar dust and on adsorption of volatile gases in comets was investigated.
Abstract: Since the observation of the 3-µm band in interstellar infrared sources1–3, vapour-deposited amorphous ice, H2O(as), has been discussed as a major component of comets4–9, of satellites of the outer planets10,11 and of interstellar dust11–13. Some of the physical properties of H2O(as) important for these discussions appear to be contradictory: for example N2 adsorption isotherms at 77 K evaluated by the BET method24 gave surface areas of 241 m2 g−1 according to Ghormley14,15, but less than 12 m2 g−1 according to others16,17. We have reinvestigated adsorption of N2 on H2O(as) and find that it is a microporous solid. The differences between adsorption phenomena taking place in micropores and on the surface of intermediate pores or non-porous adsorbents should be of general importance for the various speculations of the role of H2O(as) in space. In particular, we discuss the influence of micro-pores on the H2 recombination rate on H2O(as) in interstellar dust and on adsorption of volatile gases in comets.
232 citations
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TL;DR: The application of crystal growth theory to the formation of smoke particles from the primordial solar nebula indicates that solid particles with filamentary structures would form, which would facilitate successive aggregation into planets, comets, and asteroids.
Abstract: The application of crystal growth theory to the formation of smoke particles from the primordial solar nebula indicates that solid particles with filamentary structures would form. Such particles would facilitate successive aggregation into planets, comets, and asteroids. The difficulties associated with the aggregation of spherical smoke particles would thus be avoided.
78 citations
TL;DR: In this article, the stability of volatile ices in short period comet orbits, on the surfaces of jupiter and saturn major satellites, and on the saturn rings was studied.
70 citations