GNU social JP
  • FAQ
  • Login
GNU social JPは日本のGNU socialサーバーです。
Usage/ToS/admin/test/Pleroma FE
  • Public

    • Public
    • Network
    • Groups
    • Featured
    • Popular
    • People

Notices by Ragnar Heiðar Þrastarson (ragnarheidar@mastodon.social)

  1. Embed this notice
    Ragnar Heiðar Þrastarson (ragnarheidar@mastodon.social)'s status on Saturday, 05-Apr-2025 07:25:37 JST Ragnar Heiðar Þrastarson Ragnar Heiðar Þrastarson

    And there we have it. The 8th eruption from the #Svartsengi magma reservoir. By far the smallest one in terms of eruption time, area and volume.

    Updated lava comparison map that also includes the #Fagradalsfjall eruptions.

    #Iceland #QGIS #eruption

    In conversation Saturday, 05-Apr-2025 07:25:37 JST from mastodon.social permalink

    Attachments


    1. https://files.mastodon.social/media_attachments/files/114/281/796/881/049/991/original/61b0cd2c78296fc4.png
  2. Embed this notice
    Ragnar Heiðar Þrastarson (ragnarheidar@mastodon.social)'s status on Thursday, 23-Jan-2025 08:33:29 JST Ragnar Heiðar Þrastarson Ragnar Heiðar Þrastarson

    During volcanic eruptions in #Iceland the scientific community relies on The Icelandic Coast Guard for support during the first phase of events. Their fleet includes a #Bombardier Dash-8 turboprop equipped with a side-looking radar + camera systems. Today we did some training looking at volcanoes 🌋 🛩️

    In conversation Thursday, 23-Jan-2025 08:33:29 JST from mastodon.social permalink

    Attachments


    1. https://files.mastodon.social/media_attachments/files/113/874/603/974/830/835/original/5720f9c8d0bd2721.jpeg

    2. https://files.mastodon.social/media_attachments/files/113/874/604/028/567/284/original/e320663e9407ec63.jpeg

    3. https://files.mastodon.social/media_attachments/files/113/874/604/053/252/274/original/b96f225d9410de62.jpeg

    4. https://files.mastodon.social/media_attachments/files/113/874/604/048/378/045/original/652579379c6d0f24.jpeg
  3. Embed this notice
    Ragnar Heiðar Þrastarson (ragnarheidar@mastodon.social)'s status on Friday, 10-Jan-2025 00:11:50 JST Ragnar Heiðar Þrastarson Ragnar Heiðar Þrastarson

    More thermal infrared images from #Landsat 😍

    This image was acquired last night covering NE part of #Iceland

    Partially clouded but lots of interesting things visible like the geothermal areas near Kverkfjöll and Þeistareykir.

    Images with and without a hillshade blend.

    #usgs #nasa #satellite

    In conversation Friday, 10-Jan-2025 00:11:50 JST from mastodon.social permalink

    Attachments


    1. https://files.mastodon.social/media_attachments/files/113/798/983/281/041/370/original/b9475ac800713d36.jpg

    2. https://files.mastodon.social/media_attachments/files/113/798/988/053/115/268/original/54e5559da3e11003.jpg
  4. Embed this notice
    Ragnar Heiðar Þrastarson (ragnarheidar@mastodon.social)'s status on Wednesday, 01-Jan-2025 05:41:22 JST Ragnar Heiðar Þrastarson Ragnar Heiðar Þrastarson
    in reply to
    • Ben Brockert

    @wikkit Well, the reason there is an island where Iceland is located (and not elsewhere on the ridge) is because there is also a hot spot underneath: https://en.wikipedia.org/wiki/Iceland_hotspot

    In conversation Wednesday, 01-Jan-2025 05:41:22 JST from mastodon.social permalink

    Attachments

    1. Domain not in remote thumbnail source whitelist: upload.wikimedia.org
      Iceland hotspot
      The Iceland hotspot is a hotspot which is partly responsible for the high volcanic activity which has formed the Iceland Plateau and the island of Iceland. It contributes to understanding the geological deformation of Iceland. Iceland is one of the most active volcanic regions in the world, with eruptions occurring on average roughly every three years (in the 20th and 21st century until 2010 there were 45 volcanic eruptions on and around Iceland). About a third of the basaltic lavas erupted in recorded history have been produced by Icelandic eruptions. Notable eruptions have included that of Eldgjá, a fissure of Katla, in 934 (the world's largest basaltic eruption ever witnessed), Laki in 1783 (the world's second largest), and several eruptions beneath ice caps, which have generated devastating glacial bursts, most recently in 2010 after the eruption of Eyjafjallajökull. Iceland's location astride the Mid-Atlantic Ridge, where the Eurasian and North American Plates are moving apart, is partly responsible for this intense volcanic activity, but an additional cause is necessary to explain why Iceland is a substantial island while...
  5. Embed this notice
    Ragnar Heiðar Þrastarson (ragnarheidar@mastodon.social)'s status on Tuesday, 31-Dec-2024 23:14:32 JST Ragnar Heiðar Þrastarson Ragnar Heiðar Þrastarson

    May annual #earthquake map 🎇

    #Iceland is situated on the Mid Atlantic Ridge making it a very volcanically active. The ridge cuts the island in half from SW to the NE, slowly spreading it a part. Here are all the ~30000 earthquakes that have been verified and checked by the Icelandic Met Office staff

    In conversation Tuesday, 31-Dec-2024 23:14:32 JST from mastodon.social permalink

    Attachments


  6. Embed this notice
    Ragnar Heiðar Þrastarson (ragnarheidar@mastodon.social)'s status on Thursday, 19-Dec-2024 22:41:13 JST Ragnar Heiðar Þrastarson Ragnar Heiðar Þrastarson

    Yet another beautiful ascending night-time image from #Landsat looking at the eruption site on #reykjanes peninsula. This is brightness temperature for band 10 (thermal infrared) acquired last night around 22:30. Outline for the most recent lava shown.
    #usgs #nasa #iceland

    In conversation Thursday, 19-Dec-2024 22:41:13 JST from mastodon.social permalink

    Attachments


    1. https://files.mastodon.social/media_attachments/files/113/679/755/830/130/954/original/18eca2897d807d13.jpeg

    2. https://files.mastodon.social/media_attachments/files/113/679/756/285/889/793/original/18c1079a6167bb9a.jpeg
  7. Embed this notice
    Ragnar Heiðar Þrastarson (ragnarheidar@mastodon.social)'s status on Saturday, 07-Dec-2024 19:18:14 JST Ragnar Heiðar Þrastarson Ragnar Heiðar Þrastarson

    A great example of a suggessful cross agency collaboration! The remote sensing team lead by Joaquín and Birgir has played a key role in delivering important data for monitoring and model inputs for us at Icelandic Met Office. The Photogrammetry Lab at Icelandic Institute of Nature Research runs an extremely efficient operation with a fast response time, delivering high resolution ortho images and DEMs.

    https://www.gim-international.com/case-study/mapping-lava-flows-during-volcanic-eruptions-in-iceland?fbclid=IwY2xjawHA_yVleHRuA2FlbQIxMQABHZdo_24xoG1FAL3lLj0KA3S6XSO0mJty1S7GPXqwZFy4Tt_A4fcxtaEONg_aem_HxWkX1LQM4J290XqzB1l6w

    In conversation Saturday, 07-Dec-2024 19:18:14 JST from mastodon.social permalink

    Attachments

    1. Domain not in remote thumbnail source whitelist: www.gim-international.com
      Mapping lava flows during volcanic eruptions in Iceland
      Rapid aerial photogrammetry with high-precision GNSS georeferencing enables experts to precisely monitor eruptions even under extreme conditions, help...
  8. Embed this notice
    Ragnar Heiðar Þrastarson (ragnarheidar@mastodon.social)'s status on Saturday, 30-Nov-2024 08:22:47 JST Ragnar Heiðar Þrastarson Ragnar Heiðar Þrastarson

    We are now in midst of the 7th #eruption near the Svartsengi power plant. The most cost-effective instrument in monitoring an ongoing eruption is a camera. The Icelandic Met Office deploys quite a few cameras. This is a timelapse from our lates #PTZ camera looking westwards towards the eruption site.

    #iceland #Grindavík #Reykjanes

    In conversation Saturday, 30-Nov-2024 08:22:47 JST from mastodon.social permalink

    Attachments


  9. Embed this notice
    Ragnar Heiðar Þrastarson (ragnarheidar@mastodon.social)'s status on Sunday, 14-Jan-2024 21:43:10 JST Ragnar Heiðar Þrastarson Ragnar Heiðar Þrastarson

    Second eruption near #Grindavík ongoing. The eruptive fissure is closer to the town than the first eruption and has now cut the lava barrier that was being constructed. Photos for the Icelandic Coast Guard and the Civil Protection.

    In conversation Sunday, 14-Jan-2024 21:43:10 JST from mastodon.social permalink

    Attachments


    1. https://files.mastodon.social/media_attachments/files/111/753/590/828/785/972/original/b3f026dbe0af6bc7.jpg

    2. https://files.mastodon.social/media_attachments/files/111/753/590/834/029/750/original/1d5c814b2fb743dd.jpg

    3. https://files.mastodon.social/media_attachments/files/111/753/590/849/559/975/original/4fd466d881650fb1.jpg

    4. https://files.mastodon.social/media_attachments/files/111/753/590/832/694/826/original/073262934e6feb3e.jpg
  10. Embed this notice
    Ragnar Heiðar Þrastarson (ragnarheidar@mastodon.social)'s status on Wednesday, 20-Dec-2023 04:57:58 JST Ragnar Heiðar Þrastarson Ragnar Heiðar Þrastarson

    Night-time helicopter flight with The Icelandic Coast Guard gathering info and estimating the extent of the lava field in the early phase of this eruption.

    In conversation Wednesday, 20-Dec-2023 04:57:58 JST from mastodon.social permalink

    Attachments


  11. Embed this notice
    Ragnar Heiðar Þrastarson (ragnarheidar@mastodon.social)'s status on Tuesday, 27-Dec-2022 02:07:51 JST Ragnar Heiðar Þrastarson Ragnar Heiðar Þrastarson

    More photos from Oddur Sigurðsson! Here are my 12 favorite eruption photos (more info in alt text) #iceland #eruption #volcanos
    ? 1/3

    In conversation Tuesday, 27-Dec-2022 02:07:51 JST from mastodon.social permalink

    Attachments


    1. https://files.mastodon.social/media_attachments/files/109/576/243/327/136/569/original/62fe315cce953ab8.jpg

    2. https://files.mastodon.social/media_attachments/files/109/576/243/836/475/640/original/da21cac305bdcabe.jpg

    3. https://files.mastodon.social/media_attachments/files/109/576/244/324/923/486/original/21d0d9a52abdb11c.jpg

    4. https://files.mastodon.social/media_attachments/files/109/576/244/844/652/790/original/86ca79d3e7a572bb.jpg

User actions

    Ragnar Heiðar Þrastarson

    Ragnar Heiðar Þrastarson

    Mapmaker, mountaineer and #GIS Coordinator of The Icelandic Met Office

    Tags
    • (None)

    Following 0

      Followers 0

        Groups 0

          Statistics

          User ID
          80791
          Member since
          26 Dec 2022
          Notices
          11
          Daily average
          0

          Feeds

          • Atom
          • Help
          • About
          • FAQ
          • TOS
          • Privacy
          • Source
          • Version
          • Contact

          GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.

          Creative Commons Attribution 3.0 All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.