scholarly journals The role of water, ice nucleators, and inoculation in insect cold survival

2015 ◽  
pp. 21 ◽  
Author(s):  
Jan Rozsypal
Keyword(s):  
Water Ice ◽  
Ice Nucleators

scholarly journals Internal melt figures in ice by rapid adiabatic compression

1994 ◽  
Vol 40 (134) ◽  
pp. 132-134
Author(s):  
R.E. Gagnon ◽  
C. Tulk ◽  
H. Kiefte
Keyword(s):  
Phase Transformations ◽  
Grain Boundaries ◽  
Single Crystals ◽  
Adiabatic Compression ◽  
Air Bubbles ◽  
Water Ice ◽  
Deep Focus ◽  
And Behavior ◽  
First Time

AbstractSingle crystals and bicrystals of water ice have been adiabatically pressurized to produce, and clearly illustrate, two types of internal melt figures: (1) dendritic figures that grow from nucleation imperfections on the specimen’s surface, or from air bubbles at grain boundaries, into the ice as pressure is elevated; and (2) compression melt fractures, flat liquid-filled disks, that nucleate at imperfections in the crystal and grow with the application of pressure eventually to sprout dendritic fingers at the periphery. The transparency of the ice permitted visualization of the growth and behavior of the figures, and this could be an important tool in understanding the role of phase transformations in deep-focus earthquakes. Correlation between figure size and pressure is noted for the first time.

Mechanical Response of Nanocrystalline Ice-Contained Methane Hydrates: Key Role of Water Ice

2020 ◽  
Vol 12 (12) ◽  
pp. 14016-14028 ◽  
Author(s):  
Pinqiang Cao ◽  
Fulong Ning ◽  
Jianyang Wu ◽  
Boxiao Cao ◽  
Tianshu Li ◽  
...  
Keyword(s):  
Mechanical Response ◽  
Methane Hydrates ◽  
Water Ice

scholarly journals Seismo-electrics, electro-seismics, and seismo-magnetics for earth sciences

2015 ◽  
Vol 7 (3) ◽  
pp. 2563-2662 ◽  
Author(s):  
L. Jouniaux ◽  
F. Zyserman
Keyword(s):  
Earth Sciences ◽  
Geophysical Methods ◽  
Theoretical Background ◽  
Electromagnetic Method ◽  
Water Ice ◽  
Low Level ◽  
Non Invasive ◽  
Subsurface Exploration ◽  
Oil Gas

Abstract. The seismo-electromagnetic method (SEM) is used for non-invasive subsurface exploration. It shows interesting results for detecting fluids such as water, ice, oil, gas, CO2, and also to better characterise the subsurface in terms of porosity, permeability, and fractures. However, a limitation of this method is the low level of the induced signals. We first describe SEM's theoretical background, and the role of some key parameters. We then detail recent studies on SEM, through theoretical and numerical developments, and through field and laboratory observations, to show that this method can bring advantages compared to classical geophysical methods.

scholarly journals MONITORING OF THE NELLA FJORD WATER-ICE ECOSYSTEM (PRUDS BAY, EAST ANTARCTIC): SEASON RAE-65

2020 ◽  
Vol 48 (2) ◽  
pp. 163-165
Author(s):  
I. A. Melnikov
Keyword(s):  
Southern Ocean ◽  
Sea Ice ◽  
East Antarctica ◽  
Water Ice ◽  
Project Assessment ◽  
Antarctic Sea Ice ◽  
Antarctic Expedition ◽  
Russian Antarctic Expedition ◽  
The Antarctic

During the seasonal work of the Russian Antarctic expedition (RAE-65), the monitoring of the water-ice ecological system was conducted in the Nella fjord (Prude Bay, East Antarctica). This monitoring is conducted annually since the IPY in 2007 in frames of the project “Assessment of the ecology of the Antarctic sea ice zone” (“Krial”) (Melnikov, 2020). The purpose of the monitoring is the assessment of the role of water-ice biota in global biosphere processes in the Southern Ocean.

scholarly journals Oxo Crater on (1) Ceres: Geological History and the Role of Water-ice

2017 ◽  
Vol 154 (3) ◽  
pp. 84 ◽  
Author(s):  
A. Nathues ◽  
T. Platz ◽  
M. Hoffmann ◽  
G. Thangjam ◽  
E. A. Cloutis ◽  
...  
Keyword(s):  
Geological History ◽  
Water Ice

scholarly journals PHOTOCHEMISTRY OF POLYCYCLIC AROMATIC HYDROCARBONS IN COSMIC WATER ICE: THE ROLE OF PAH IONIZATION AND CONCENTRATION

2015 ◽  
Vol 799 (1) ◽  
pp. 14 ◽  
Author(s):  
Amanda M. Cook ◽  
Alessandra Ricca ◽  
Andrew L. Mattioda ◽  
Jordy Bouwman ◽  
Joseph Roser ◽  
...  
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Aromatic Hydrocarbons ◽  
Water Ice ◽  
Polycyclic Aromatic

scholarly journals Charging of mesospheric aerosol particles: the role of photodetachment and photoionization from meteoric smoke and ice particles

2009 ◽  
Vol 27 (6) ◽  
pp. 2417-2422 ◽  
Author(s):  
M. Rapp
Keyword(s):  
Electron Capture ◽  
Aerosol Particles ◽  
Pure Water ◽  
Electron Attachment ◽  
Water Ice ◽  
Ice Particles ◽  
Repeated Observation ◽  
Meteoric Smoke ◽  
Positively Charged

Abstract. Time constants for photodetachment, photoemission, and electron capture are considered for two classes of mesospheric aerosol particles, i.e., meteor smoke particles (MSPs) and pure water ice particles. Assuming that MSPs consist of metal oxides like Fe2O3 or SiO, we find that during daytime conditions photodetachment by solar photons is up to 4 orders of magnitude faster than electron attachment such that MSPs cannot be negatively charged in the presence of sunlight. Rather, even photoemission can compete with electron capture unless the electron density becomes very large (>>1000 cm−3) such that MSPs should either be positively charged or neutral in the case of large electron densities. For pure water ice particles, however, both photodetachment and photoemission are negligible due to the wavelength characteristics of its absorption cross section and because the flux of solar photons has already dropped significantly at such short wavelengths. This means that water ice particles should normally be negatively charged. Hence, our results can readily explain the repeated observation of the coexistence of positive and negative aerosol particles in the polar summer mesopause, i.e., small MSPs should be positively charged and ice particles should be negatively charged. These results have further important implications for our understanding of the nucleation of mesospheric ice particles as well as for the interpretation of incoherent scatter radar observations of MSPs.

Sign in / Sign up

Export Citation Format

Share Document