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  • 71. New version for new IMO

    appropriate. Hydrology Flow information from the past 24 hours is presented, both on a map with selected stations and in a table of averages. A summary of last week's report can be read and the comment or warning of IMO's hydrologist when appropriate. Some of the web-site's litterature has been relocated, e.g. articles on pollution, radiation, ozone and lightnings. Over the next few weeks /about-imo/news/nr/1538
  • 72. Eruption has started in Grímsvötn

    not during the first 24 hours. The figure on the right (above) shows an image of the eruption cloud at 22:00 UTC. The image is from the Icelandic Met Office weather radar located at Keflavik International Airport, at 220 km distance from the volcano. The cloud extends above a large part of Vatnajökull ice cap. The line marks the approximate location of Grímsvötn volcano. The last eruption /about-imo/news/nr/2174
  • 73. Measurements and simulation of volcanic ash for civil aviation

    An eruption in Grímsvötn in May 2011. It is assumed that as much ash was released into the air during the first 24 hours of this eruption as in total during the 40 days of the Eyjafjallajökull eruption a year earlier. Measurements and simulation of volcanic ash /about-imo/news/nr/2421
  • 74. A new weather radar in the East

    high). A strong reflection may be observed although the precipitation does not reach the ground, i.e. when water droplets evaporate while falling. Combined images are also presented on IMO's web. There, the radar images are combined with a thermal image from the weather satellite Meteosat-9, which belongs to EUMETSAT. Panoramic view from Teigsbjarg by Richard Yeo, 24 April 2012 /about-imo/news/nr/2528
  • 75. Grimsvotn_status_2010-11-04_IES_IMO

    frequency tremor indicative of volcanic activity. Earthquakes: Since yesterday evening, four earthquakes ranging in size from magnitude 0.7 to 1.2 have been detected at Grímsvötn. GPS deformation: No change; see status report from 01 November 2010. Overall assessment: During the last 24 hours, tremor levels at seismic station 'grf' have declined considerably. Discharge measurements /media/vatnafar/flod/Grimsvotn_status_2010-11-04_IES_IMO.pdf
  • 76. Wind-chill table

    heat transfer theory, i.e. heat loss from the body to its surroundings, during cold and breezy or windy days. The table below covers the range of likely wind speeds and temperatures in Iceland. For instance, at air temperature of -12 °C and wind speed of 12 m/s, the wind-chill equals -24°C in calm weather. Back /weather/articles/nr/1827
  • 77. A new weather radar in the East

    Panoramic view from Teigsbjarg by Richard Yeo, 24 April 2012. News 2022 2021 2020 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 /about-imo/news/nr/2528/
  • 78. Articles

    © Árni Sigurðsson Subsiding eruption plume in Grímsvötn 24 May 2011. Photo taken between 20:50 and 21:50. Of interest - Bárðarbunga Reduction of the accesscontrolled area around Holuhraun lava field END /earthquakes-and-volcanism/articles/bigimg/1874
  • 79. Eyjafjallajokull_status_2010-05-10_IES_IMO

    plume: Height (a.s.l.): ~5 km / 17,000 ft but sometimes shoots up to 6 km / 20,000 ft. Heading: Southeast. Low level winds are variable. Colour: Grey / light gray. Tephra fallout: Ashfall reported at Drangshlíð and Skarðshlíð almost continuously for the last 24 hours. The ash is rather coarse, estimated by the farmers to be ~2-3 mm. Lightning: No lightning has been detected on instruments over /media/jar/Eyjafjallajokull_status_2010-05-10_IES_IMO.pdf
  • 80. Eyjafjallajokull_status_2010-05-15_IES_IMO

    on the ATDnet during the last 24 hours. Noises: No reports. Meltwater: Low water discharge at Gígjökull. Conditions at eruption site: No flight observations, but according to web cameras and instruments there are no major changes. Seismic tremor: Similar to previous week. Earthquakes: An earthquake swarm started beneath Eyjafjallajökull just before midnight. In the period between 23 /media/jar/Eyjafjallajokull_status_2010-05-15_IES_IMO.pdf

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