Report on Tinakula (Solomon Islands) — July 2007
Bulletin of the Global Volcanism Network, vol. 32, no. 7 (July 2007)
Managing Editor: Richard Wunderman.
Tinakula (Solomon Islands) Thermal anomalies suggest eruption, but field observations absent
Please cite this report as:
Global Volcanism Program, 2007. Report on Tinakula (Solomon Islands). In: Wunderman, R (ed.), Bulletin of the Global Volcanism Network, 32:7. Smithsonian Institution. https://doi.org/10.5479/si.GVP.BGVN200707-256010.
10.386°S, 165.804°E; summit elev. 796 m
All times are local (unless otherwise noted)
MODIS thermal anomaly data for Tinakula (table 3) suggests continuing eruptive activity during the period mid-April through mid-July 2007, but no validation by field observations has become available. Similar intermittent anomalies have been detected since mid-February 2006 (BGVN 31:03 and 32:03).
|12 Apr 2007||1420||1||Aqua|
|17 Apr 2007||1140||1||Terra|
|19 Apr 2007||1425||1||Aqua|
|03 May 2007||1440||2||Aqua|
|05 May 2007||1125||1||Terra|
|05 May 2007||1425||1||Aqua|
|10 May 2007||1145||2||Terra|
|10 May 2007||1445||2||Aqua|
|15 May 2007||1200||1||Terra|
|18 Jun 2007||1150||2||Terra|
|27 Jun 2007||1145||1||Terra|
|27 Jun 2007||1445||1||Aqua|
|29 Jun 2007||1130||1||Terra|
|11 Jul 2007||1155||4||Terra|
|11 Jul 2007||1455||4||Aqua|
|13 Jul 2007||1145||1||Terra|
Several photographs were taken offshore of the island during the February 2006 eruption (BGVN 31:03); figure 6 is an example of some activity during that eruption.
|Figure 6. Lava blocks tumbling into the ocean on at Tinakula on the morning of 21 February 2006. Courtesy of Bill Yeaton.|
Geologic Background. The small 3.5-km-wide island of Tinakula is the exposed summit of a massive stratovolcano at the NW end of the Santa Cruz islands. Similar to Stromboli, it has a breached summit crater that extends from the summit to below sea level. Landslides enlarged this scarp in 1965, creating an embayment on the NW coast. The satellitic cone of Mendana is located on the SE side. The dominantly andesitic volcano has frequently been observed in eruption since the era of Spanish exploration began in 1595. In about 1840, an explosive eruption apparently produced pyroclastic flows that swept all sides of the island, killing its inhabitants. Frequent historical eruptions have originated from a cone constructed within the large breached crater. These have left the upper flanks and the steep apron of lava flows and volcaniclastic debris within the breach unvegetated.
Information Contacts: Hawai'i Institute of Geophysics and Planetology (HIGP) Thermal Alerts System, School of Ocean and Earth Science and Technology (SOEST), Univ. of Hawai'i, 2525 Correa Road, Honolulu, HI 96822, USA (URL: http://modis.higp.hawaii.edu/); Bill Yeaton (URL: http://www.billyeaton.com/).