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January 18, 2011

Dogmeat Tumblr: Archive

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The Father’s Day intrusion, described elsewhere on this Website, was accompanied by the collapse of the floor of Pu`u `O`o crater as lava withdrew from beneath the cone. The crater floor dropped about 100 meters in the center of the crater near the former Drainhole vent. The crater began to refill with lava on July 2, primarily from a vent on the western part of the crater floor near the site of the former Beehive vent. The crater floor was quickly buried and the crater began to refill with lava. Early in the refilling process, the erupted lava partly drained back into the erupting west vent, then quickly emerged again. This movie highlights a large drainback followed by a smaller secondary drainback. Volcanoes can be difficult to study up close and in person. Because it may be days, weeks, or even years between important events, it is not always possible to have observers on the ground. In addition, volcanoes are often inaccessible due to their remote location and/or harsh environmental conditions. When you throw an eruption into the mix, another level of complexity is added to what may be an already difficult and dangerous situation. For these reasons, scientists at Hawaiian Volcano Observatory have, for years, built camera systems to act as surrogate eyes, and, with the rapid advances in digital camera technology, these eyes are seeing better and better. Many of you are probably already aware of the Pu`u `O`o webcam and the Mauna Loa webcam serving near-real-time pictures of these two active volcanoes. Time lapse camera systems supplement the webcams by providing an inexpensive alternative that can be rapidly and easily deployed. These camera systems have allowed Hawaiian Volcano Observatory scientists to document a variety of exciting volcanic processes that occur on active shield volcanoes. The following time lapse movies illustrate many of these processes.

Read MORE » on DogmeatCheck out this website I found at dogmeattumblr.tumblr.com The Father’s Day intrusion, described elsewhere on this Website, was accompanied by the collapse of the floor of Pu`u `O`o crater as lava withdrew from beneath the cone. The crater floor dropped about 100 meters in the center of the crate ...