Archive for the US/Mexico Category

Recent Activity in Hawaii: March 30th-April 5th

Posted in US/Mexico on April 12, 2011 by sarahnye1

The picture above is from March 28th, showing the lava that reappeared in the Pu`u `Ō `ō crater, covering the floor with a small lava lake

Hawaiian Volcano Observatory

Kilauea Update:

From March 30th to April 5th, The Hawaiian Volcano Observatory reported that the lava lake in the deep pit within Kilauea’s Halema’uma’u crater was for the most part crusted over. Incandescence was observed through web cameras on March 30th, and lava was visible at times during March 31st and April 3rd and 4th. A gas plume from the vent deposited small amounts of  ash nearby, derived from rockfalls and occasional spatter from the lava lake.

At Pu’u ‘O’o crater, the lava lake was fed from a few sources in the center or West portions of the lake. The deepest part of the crater was episodically filled and drained. From April 4th-5th, the central lava sources produced two or three small lava flows and infrequent spatter.

Smithsonian Volcanic Activity Reports

By Sarah Nye

April 12th, 2011

Recent Volcanic Activity in Hawaii, March 9th-24th

Posted in US/Mexico on March 29, 2011 by sarahnye1

As of March 10th, the East Rift Zone eruption  had a lack of activity.

http://www.youtube.com/watch?v=ZzFeZTVxDeY&NR=1

The video link above is from March 5th, but it is a very interesting look at the Kilauea crater collapsing.

The Kamoamoa fissure eruption was probably the most exciting thing Hawaii has seen recently. These pictures show the thickness of the flow produced by the eruption.

Since March 9th, the end of the Kamoamoa fissure eruption, no lava has been erupted on the east rift zone. The floor of Pu`u `O`o is still filled with rubble, and there is no active lava in the area. The summit of the mountain has been active this week, as the inflation and deflation of the lava lake in the Halema`uma`u Overlook vent has caused it tto disappear.

This week, some small rock falls have also been observed. The volcanic gas emissions have decreased over this past week but still remain high, resulting in high concentrations of sulfur dioxide downwind, from March 16th to 18th.

Two earthquakes were also felt beneath the Hawaii island this week, one on the 18th and the other on the 20th.

http://www.hawaii247.com/2011/03/26/volcano-watch-kilauea-activity-update-for-the-week-of-march-24/

http://www.volcano.si.edu/reports/usgs/#kilauea

http://hvo.wr.usgs.gov/kilauea/update/images.html

By Sarah Nye, March 28th, 2011

Recent Volcanic Activity in Hawaii, February 9th-24th

Posted in US/Mexico on March 2, 2011 by sarahnye1

lava lake
Above: the “lava lake” as on February 24th, 2011

Located on the Hawaiian island of Maui, the Halema`uma`u crater is a pit crater located within the much larger summit caldera of Kīlauea. For the past couple of weeks, Scientists have been monitoring this area closely because of it’s activity. A lava lake has been developing in this particular crater. On February 9th, 2011, the lava surface had been quite shallow, about 90 meters below the floor of Halema`uma`u crater. On February 14th, ashy plumes were observed and by the 24th of February, the lava surface in the vent returned to about 80 meters.

This link will show you the ashy eruption on February 14th:

http://hvo.wr.usgs.gov/kilauea/update/archive/2011/Jan/20110214_0658_torr_small.mov

More info at: http://www.hawaiinewsnow.com/Global/story.asp?S=14037416

February 28th, 2011 by Sarah Nye

Volcanic Activity in the USA and Mexico for 2/7-2/11/2011

Posted in US/Mexico with tags , , , , on February 15, 2011 by volcanoesfys102

Hawaii is one of the most volcanically active places on Earth, as effusive eruptions are continuous pretty much all of the time. Recently in Hawaii, USGS reports are keeping track of ongoing seismicity within the upper east rift zone. Geologists describe this rift zone as a growing concern. Earthquakes have been rocking the volcano reigon, including a 3.8 magnitude jolt that shook the Volcano area Thursday, February 10th at 8:30am. Kilauea in Hawaii has had ongoing activity.

Aside from Hawaii, another earthquake (4.3 magnitude) also hit the Mount St. Helens area Monday Frebruary 14th at 10:35 a.m. on the east side of Spirit Lake. However, this is not a huge concern dealing with volcanic activity, because this earthquake was of the crustal variety rather than the magmatic.

Lava Lake on Hawaii’s Kilauea Rising Steadily

Strong Earthquake Hits Mount St. Helens

By Sarah Nye, Tuesday, February 15th, 2011