![]() The fumaroles are superheated, but just by a degree or two. Samples and two sets of thermal water samples have been collected. Unnamed valleys on the volcano's northwest flank.ĭay 19: July 25 - All eight tones from the six seismic stations are now being received in Dutch Harbor (YES!!!!). Geologists had a hot, sunny, glorious day chasing postglacial deposits among the flowers of various The sixth needs some (hopefully minor) re-engineering of the telemetry. Day 16: July 22 - Finally the southern repeater site cleared and the seismologists recovered tools and parts and got a lot of work done. Previously unknown Holocene valley-filling lava flows form hummocky terrain just in frount of the glacier terminus. Geologic work concentrated on the Wide Bay Cone, a prominent cinder cone easily visible from Dutch Harbor. Patchy low clouds prevented recovery of tools and parts from the southern repeater station on bothĪttempts to reach the station. Field installation is slowed, at least in part because Andy has the crud.ĭay 14: July 20 - Bright sunny and moderately windy day. The antenna mast at the receive site was erected. Lateral blast and debris avalanche package of Holocene age was found at Koriga Point. Two very young vents - one of which fed a substantial lava flow, were found high above Pt. Lava flows was found at the head of the valley ending at Bishop Point. A package of previously unrecognized post-glacial We were also able torecognize several different ages of midĭay 12: July 18 - The last two days provided more new information about the Holocene history of Makushin. Today's reinvestigationįound lava flows of Holocene age sandwiched between probable Pleisotocene deposits and the pyroclastic debris. Day 11: July 17 - This valley which comes to the coast at Bishop Point has long been known to contain Holocene volcanic fragmental debris. Post-glacial pyroclastic deposits fill this valley which meets the ocean at Bishop Point on the northwest side of Makushin Volcano. Geologists continued to map a debris avalanche down Glacier Valley, on the west side of the volcano. Since the last systematic survey over ten years ago.ĭay 9: Sunday July 15 - The Nateekin station is transmitting now. Initial inspection of the hot springs and fumaroles in the area show some changes LaharsĪnd debris avalanches of mid to late-Holocene age (as young as a few thousand years) occur in the Geologists began reevalulating upper Glacier Valley deposits. This is also the most poorly known sector ofĭay 8: Sunday July 14 - Enclosures on the southern side Holocene eruptions of varied types and ages. ![]() These deposits appear to record a number of different major Geologists began work on a package of young deposits on the The crew is feeling pretty much on top of it.ĭay 7: Saturday July 13 - Enclosures at the northwesternmost site andĪ repeater site on Table Top were installed. Installation of seismic components remains. Day 6: Friday July 12 - Most of the heavy slinging is done. All material is brought in by helicopter. The helicopter and pilot - Gary Brogdan -Īrrive at about 11:30 pm after a twelve hour trip from Homer.īob Hammond and Milton Garces (back) install one of the south-side stations. Began to move into the apartments and get set up. Roach arrive in Unalaska / Dutch Harbor to broken clouds, blue sky, warm temperatures and a lightīreeze. The following is a daily project log from the 1996 summer mapping of Makushin Volcano,ĭay 1: Sunday July 7 - V. Which to interpret seismic and satellite data. Geologic investigations also provide a framework within AVO alsoĬonducts basic volcanological investigations to determine the conditions of origin, rise, and eruption of magmas. A suite of preliminary hazard reports for the volcanoes which AVO actively monitors have been published, or are in various pre-publication stages. These assessments are based on helicopter-supported field investigations of one to several seasons and on laboratory investigations of the composition and chemistry of theĭeposits. Volcano, explanations of likely eruption scenarios, and determination of probable impact zones for the range of expected hazards. Hazard assessments include a description of the eruptive history of a given Responsible for assessing the full range of potential hazards at specific volcanic centers. In support of public land-use planning, development of emergency response plans, and general public awareness of the nature of volcanic activity in Alaska, AVO is
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