David
12-07-2005, 06:52 PM
0550 December 7
A notable earthquake swarm is under way at Lo`ihi Seamount, the submarine volcano off Kilauea's south coast. The swarm started at about 2200 yesterday and by 0349 this morning had produced 16 earthquakes with preliminary magnitudes of between 3 and 4.7. The swarm may be tapering off, for no earthquakes have been recorded from there since 0349.
On the 64th anniversary of the attack on Pearl Harbor, a bright, lightning-lit sky looks down on a cool, windy Kilauea with lava visible on Pulama pali and at the coast. Lava is flowing in two small streams on the pali, one (the western) at about the 1000-foot elevation and the other in several places between the 900- and 700-foot elevations. The activity is minor but up somewhat from its weak level yesterday morning.
At the coast, lava is visible at the new East Lae`apuki delta. Two sources of glow are apparent, and lava is dropping off the southwest side of the delta into the sea.
Glow is visible from Pu`u `O`o, though often obscured by the intense lightning, and all vents except Beehive are visible.
Background volcanic tremor is about normal at Kilauea's summit. Volcanic tremor is at a moderate level at Pu`u `O`o.
The tilt at Kilauea's summit stepped down almost 0.5 microradians during the past 24 hours. Each of the two steps ended with flat tilt lasting several hours. Pu`u `O`o dropped about 1.6 microradians in the same time, climbed up about 0.9 microradians, and currently is again deflating.
http://volcanoes.usgs.gov/update.html
A notable earthquake swarm is under way at Lo`ihi Seamount, the submarine volcano off Kilauea's south coast. The swarm started at about 2200 yesterday and by 0349 this morning had produced 16 earthquakes with preliminary magnitudes of between 3 and 4.7. The swarm may be tapering off, for no earthquakes have been recorded from there since 0349.
On the 64th anniversary of the attack on Pearl Harbor, a bright, lightning-lit sky looks down on a cool, windy Kilauea with lava visible on Pulama pali and at the coast. Lava is flowing in two small streams on the pali, one (the western) at about the 1000-foot elevation and the other in several places between the 900- and 700-foot elevations. The activity is minor but up somewhat from its weak level yesterday morning.
At the coast, lava is visible at the new East Lae`apuki delta. Two sources of glow are apparent, and lava is dropping off the southwest side of the delta into the sea.
Glow is visible from Pu`u `O`o, though often obscured by the intense lightning, and all vents except Beehive are visible.
Background volcanic tremor is about normal at Kilauea's summit. Volcanic tremor is at a moderate level at Pu`u `O`o.
The tilt at Kilauea's summit stepped down almost 0.5 microradians during the past 24 hours. Each of the two steps ended with flat tilt lasting several hours. Pu`u `O`o dropped about 1.6 microradians in the same time, climbed up about 0.9 microradians, and currently is again deflating.
http://volcanoes.usgs.gov/update.html