New hydrothermal vents form at Indonesia’s Anak Krakatau volcano

July 7, 2012INDONESIADuring our recent expedition to Krakatau volcano, we could no longer see the lava dome active during Feb-May this year. Probably, the magma column had dropped in mid to late May and the dome collapsed. At its place, there were only 2 collapse pits, very hot ground and intense degassing from numerous fumaroles inside and outside of the now large summit crater.  Seismic activity when visiting the local volcano observatory was at very low levels, suggesting that Anak Krakatau is at the moment in a phase of repose. Interestingly, a number (at least four) areas with apparent submarine hydrothermal iron-bearing vents were observed that had not been there last year. In these areas, bubbling could be seen in the water, and where accessible, iron-rich greenish warm mud was found at the sea floor, which oxidized to orange when brought to the surface. The sea water around these areas had an intense yellow stain. Very similar submarine activity is known from around Nea Kameni Island, Santorini. –Volcano Discovery
Activity still strong at El Hierro: Seismic activity at El Hierro (Canary Islands), continues with a swarm or steady burst of small tremors  Earthquakes continue in the vicinity of Orchilla, mainly at sea, both south and west, at a depth around 20 km occur without migration to the surface. The seismic energy released reached a cumulative total of 1.57 x 1012joules. Up to 24 hours yesterday, July 6, the GPS network shows stability of the deformations in both the horizontal components as in the vertical. The strains show apparent center of pressure in the Sea of Calm that for a few days, gradually moving to the southwest. The total cumulative displacement between June 24 and 24 hours of yesterday is still about 8 centimeters in the horizontal components and about 10 inches maximum deformation in the vertical component. About 99 seismic events have registered at El Hierro in the past 24 hours. –The Extinction Protocol
This entry was posted in Earth Changes, Earth Watch, Earthquake Omens?, High-risk potential hazard zone, Potential Earthchange hotspot, Seismic tremors, Signs of Magnetic Field weakening, Volcano Watch. Bookmark the permalink.

3 Responses to New hydrothermal vents form at Indonesia’s Anak Krakatau volcano

  1. The yellowish stain reported in the water sounds a lot like the yellowish stain in the coastal waters of Japan a few days ago, which would indicate undersea volcanic activity near Japan. ‘Twas Honshu, east coast I think…


  2. Carla B. says:

    Alvin, re “Activity wanes at El Hierro” looking at this website you will see that El Hierro is not settling, quite a significant number of M3’s earthquake. Thank you , thank you, thank you for this great website, it’s a great support for me. Keep safe all..


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