CHLORINE, FLUORINE, AND SULFUR EMISSIONS FROM MOUNT EREBUS, ANTARCTICA AND ESTIMATED CONTRIBUTIONS TO THE ANTARCTIC ATMOSPHERE

ZREDAGOSTYNSKA G, KYLE PR, FINNEGAN DL

GEOPHYSICAL RESEARCH LETTERS
v. 20(#18) pp. 1959-1962 1993
(Title at LANL MAIN.)

Institutions:

• NEW MEXICO INST MIN & TECHNOL,DEPT GEOSCI/SOCORRO//NM/87801
• LOS ALAMOS NATL LAB/LOS ALAMOS//NM/87545

Abstract:

The discharge rates of halogens in aerosols and gases emitted from Mount Erebus between December 1986 and January 1991 were estimated by combining element-to-sulfur ratios on filter samples with SO2 output measured by COSPEC. The halogen and sulfur content of the gas vary in a quasi-cyclical pattern possibly because of a heterogeneous distribution of volatiles in the Erebus magmatic system. The emission rates of HF and HCl have increased twofold since 1986 reaching 6 and 13.3 Gg yr-1, respectively, in 1991, making Erebus an important contributor of halogens to the Antarctic atmosphere.

Keywords:

SOUTH-POLE; GASES; PARTICLES; COLLECTION; VOLCANOS; DIOXIDE;