Water ice at low temperatures and pressures: New Raman results

Analysis of Arctic ices by Remote Raman Spectroscopy

“…A band analysis performed on these spectra shows the broad v(OH) stretching band is composed of five main components (see Table 1). These components are totally in agreement with the recent results of Furic and Volovsec [21] and in general agreement with classical results on Ice-Ih of Slusher and Derr [16] and Whalley [17]. Fig.…”

“…Their assignment were done in terms of the in-phase and out-of-phase vibrations of OH bonds in the tetrahedrally hydrogen bonded coordination. The contribution of OH vibrations in mixtures with clusters in more amorphous structures to the bands at 3254, 3366 and 3443 cm −1 (Table 1) also cannot be ruled out [21]. The remote Raman spectra obtained on big ice cores for microbiological studies are shown in Fig.…”

“…The structural information obtained from Raman spectra is quite useful and can be related with temperature and pressure effects on ice [20,21]. The Raman spectrum of ice is well known and consist basically on the three internal vibrations of the water molecules (symmetric v 1 (A 1 ) and antisymmetric v 3 (B 2 ) OH stretching modes, and HOH bending v 2 (A 1 ) mode) and the external modes, mainly water translations and librations.…”

“…Nevertheless a particular characteristic of the vibrational spectrum of liquid water and ice is the strong intermolecular couplings between neighboring molecules as a consequence of the networking of hydrogen bonds. In consequence the in-phase and out-phase couplings and other intermolecular waterinteractions have to be considered for the correct interpretation of the spectra experimentally obtained [16][17][18][19][20][21].…”

“…On the onset the panoramic image of the iceberg and the telescope image of one particular targeted area are presented. [21]. Their assignment were done in terms of the in-phase and out-of-phase vibrations of OH bonds in the tetrahedrally hydrogen bonded coordination.…”