Montserrat Volcano Observatory

Daily Report
Report for the period 5 p.m. 23 December
to 5 p.m. 24 December 1998

Activity at the volcano has remained low. During the reporting period only one rockfall signal and a single volcano-tectonic earthquake were recorded by the seismograph network

COSPEC measurements completed this morning from the helicopter gave a sulphur dioxide flux of 1311 tonnes/day.

GPS measurements are made with stations belonging to the MVO and the University of Puerto Rico. They are made continuously at fixed sites and intermittently at various other sites on the volcano and around the island. Although deformation rates are low there is still continued movement on the volcano. Between March and October this year the line between Harris and Hermitage shortened by 2cm. Since October the rate of shortening increased markedly with 4.5cm shortening. Recent occupations at Tar River and Long Ground show continued eastward movement of those sites.

Residents of Montserrat are advised to keep listening to ZJB Radio Montserrat for information relating to any further developments in the state of the volcano. The MVO would like to wish everyone a happy and relaxing Christmas.

Montserrat Volcano Observatory