| start date | end date | title | description | icon | date limit | importance |
link | modal |
|---|
| 1955-00-00 | 1956-00-00 | Shrub: 1955 - 1956 | Nichols and Yehle (1961) provide a description of Shrub mud volcano as they saw it during the summers of 1955 and 1956. "A vegetation-bare basin or crater about 120 feet in diameter and floored by clayey silt is present on the southwest side of the cone about thirty-five feet below the crest. In 1955 this basin had seven pools, two to eighteen inches in diameter, from which gas and silt-laden water were discharged. Only a trickle of water from the pools drained across the basin and down the ... More information | information.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Klawasi Group&eruptionid=337&page=basic | |
| 1996-00-00 | | Shrub: 1996 | From Richter and others (1998): During the summer of 1996, a "helicopter pilot observed an active mud spring low on the north flank of the cone [see fig. 3 in original text] and probably activity from the summit area near the present fissure vent (Fritz Wohlwend, Trans-Alaska Helicopters, Inc., personal communication 1997). This activity was never reported publicly, but fortuitously, we flew with this pilot on our first visit to the mud volcano on 21 July 1997." | information.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Klawasi Group&eruptionid=338&page=basic | |
| 1997-06-12 | 1997-12-2 | Shrub: 1997 | From McGimsey and Wallace (1999): "The present [1997] activity was first noticed by Alaska Department of Fish and Game personnel on June 12, 1997. AVO and National Park Service field crews visited the site on June 21, June 30, and on August 13, 1997, and found that most of the gas and mud emission was occurring from at leaset four areas on the summit and north, northwest, and southeast flanks [see fig. 7 in original text]. The activity ranged from quiet effusion of CO2 from collapse pits to ... More information | information.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Klawasi Group&eruptionid=339&page=basic | |
| 1998-07-31 | 1999-00-00 | Shrub: 1998 - 1999 | Staff from the Alaska Volcano Observatory visited Shrub on July 31, 1998, and reported "The level of activity remains high. Total amount of mud production at the volcano is probably about the same as in August, 1997. However, production at the main vent area [see fig. 4 in original text] is considerably less than the rate observed in 1997. A very noticeable change is the nature of the eruptive activity. The violent discharge of mud and gas that was typical of the 1997 activity was not observed ... More information | information.png | ye | 50 | http://www.avo.alaska.edu/volcanoes/activity.php?volcname=Klawasi Group&eruptionid=340&page=basic | |
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