TY  - JOUR
AU  - Grilli R, Marrocco N.
PY  - 2014//
TI  - Invited article: SUBGLACIOR: an optical analyzer embedded in an Antarctic ice probe for exploring the past climate.
JO  - The Review of scientific instruments
SP  - 111301
VL  - 85
IS  - 11
PB  - AIP Publishing
N2  - This article describes the advances made in the development of a specific optical spectrometer basedon the Optical Feedback-Cavity Enhanced Absorption Spectroscopy technique for exploring past climateby probing the original composition of the atmosphere stored in the ice sheet of a glacier. Based on significant technological progresses and unconventional approaches, SUBGLACIOR will be arevolutionary tool for ice-core research: the optical spectrometer, directly embedded in the drilling probe, will provide in situ real-time measurements of deuterium isotopic variations (δ2H ) and CH4 concentrations down to 3500 m of ice depth within a single Antarctic season. The instrument will provide simultaneous and real-time vertical profiles of these two key climate signatures in order to evaluate if a target site can offer ice cores as old as 1.5 million years by providing direct insight into past temperatures and climate cycles. The spectrometer has a noise equivalent absorption coefficient of 2.8 × 10-10 cm-1 Hz-1/2, corresponding to a detection limit of 0.2 ppbv for CH4 and a precision of 0.2‰ on the δ2H of H2O within 1 min acquisition time.
SN  - 0034-6748
UR  - http://dx.doi.org/10.1063/1.4901018
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=5929), last updated on Sat, 06 Jul 2024 02:07:58 +0200
ID  - GrilliR2014
ER  -