13 comments on “Baru Jari, Son of Rinjani and Samalas – A Time Line

  1. An excellent post, as always. Now, I have a problem with Rinjani. Simply, is the Rinjani/Samalas complex a single volcanic system, or a ‘twin’ of two closely spaced centres, Rinjani and Samalas/Barujari? If the former, then the volcanic ornithologists are in for a long wait, Barujari’s frequent moderate eruptions and lava flows are a poor Black Swan habitat. But if the latter; while probably related, closely spaced, even overlapping, ‘twins’ may have independent plumbing systems, thus a caldera paroxysm at Samalas would not rule out a serious event from Rinjani, which is after all a large cone in its own right, youthful in appearance, with at least one eruption post- 1257 but nothing much in historic time – just the sort of volcano to be regarded with deep suspicion, in fact. Thoughts?


    • Hi Michael, thank you! No chance for black swans in this aera, I think. Mount Rinjani and its caldera with the new vent Barujari at the bottom are just the remnants of the pre-caldera Mount Samalas. There must have been much confusion even locally about the naming, because Dr. Surono found it important to clearly explain just that to the press in Yogya a few days ago. If Google translated correctly, he even said Salamas was renamed Rinjani. However, from the 2013 paper it appears that both “R” and “S” existed as two peaks of the same (pre-caldera) mountain (with “S” ~500m higher than the present Mt. Rinjani). In any case, Surono made it clear that there is only one volcano which is not expected to produce any major explosive eruption soon as it has been so busily erupting gently for at least the last 200 years (time that records exist, after 1257). But then… you never know with black swans! 😉

      But I have to admit that I have not found a source yet where the magma system under Rinjani is described, either due to access restrictions to most papers or to not looking hard enough. If anyone else has a link for me I would be grateful.


  2. As this is such an interesting topic I’m going to add to the Further Reading section in the post two more links.
    1. Supplemental information to the already mentioned Mystery unveiled 2013 main paper. This contains a lot of additional details of how the team arrived at their conclusion, a very interesting read:

    Click to access pnas.201307520SI.pdf

    2. A new study that identifies and characterises a new prominent inter-regional chronostratigraphic tephra marker from the 1257 eruption on Lombok:
    http://www.researchgate.net/publication/280739917_Dynamics_of_the_major_plinian_eruption_of_Samalas_in_1257_A.D._%28Lombok_Indonesia%29 (click on ‘See full text’ in the reader field below the abstract, or download PDF)


  3. Hi Granya et al!
    I am ashamed of myself. It’s been a month since I was back from the Azores and not a line ever since. The reason is because I have been working intensely on my thesis (nothing to do with volcanoes) and I had so much to tell you people about that wonderful volcanophile’s dream in the Middle of the Atlantic! Actually I stayed only in one of the 9 inhabited islands : São Miguel, but perhaps the richest (volcanically speaking) and surely the largest. It has three active calderas (which do not look so different from the photos of Rinjani/Samala) and a volcanic field. Recent submarine eruptions reminded me of Hierro and there are so many volcanic features I can’t imagine I would have learned so much!
    Granyia, I am still very busy, but let me know if you are still interested in writing an article on Sao Miguel. I can provide some bad quality pics, but there are photos everywhere!
    Best and keep doing the great job!
    “https://picasaweb.google.com/110366256140084081552/9DeNovembroDe2015?authuser=0&feat=directlink” alt=”Lagoa de Santiago – Lava dome lagoon in Sete Cidades Caldera”


    • Hello Renato! I’m glad you had a great holiday on Sao Miguel, sure you could use a break from your academic work! Please don’t be ashamed, we all know that RL is more important than hobby. Yes, I still plan to have a post on Azorean volcanoes, or if that is too wide a scope then perhaps Sao Miguel alone. I sent you an email.

      Accidentally, only yesterday I run across this almost 200-year-old book which seems to be a great read: “Volcanic Wonders, and Scenes of Astonishment: Being Historic and Scientific Descriptions of the Volcanoes of the Azores, and a General View of Burning Mountains, in Various Parts of the Globe” by Hulbert Charles, publ. 1827. With personal travel descriptions and woodcut pictures of the time. It can be read online here: https://books.google.de/books?id=okg0AQAAMAAJ&source=gbs_navlinks_s , but can also be downloaded as a free e-book from Google.

      Thanks for your photo too! As to your question regarding the next photo in your account: This plant is a Lanzarote Giant Houseleek (Aeonium lancerottense, http://www.naturephoto-cz.com/photos/andera/aeonium-lancerottense-11b.jpg). Did you take it in Lanzarote? La Gomera has similar ones of the same family, and they can get huge (my camera case for scale):


      • Hi Granyia! I’m glad that I will still have time to share the wonderful experience. Meanwhile I have been catching up with all the great information collected by you and Agimarc – precious stuff indeed! Congrats!
        As for the plant, I don’t think it is a species from Canarias… it was given me by a student and I was trying to save it, but definitely it didn’t adapt to my apartment environment, and it was way much smaller!


  4. Strong Strombolian activity at Fuego tonight! Video: Activity Strombolian volcano Fuego, from Antigua, Guatemala. Published on 9 Nov 2015
    by Mayan Crossroads “Volcan de Fuego in full eruption on 2015-11-09. Truly spectacular!”


    • From CONRED and INSIVUMEH reports:
      V. de Fuego: On the night of Monday 09 November, the Fuego volcano began a new eruptive phase that consists of increased energy output and is forming effusive lava flows down the south flank, according to the special bulletin BEVFO # 91-2015. No evacuations of nearby communities are necessary. This new phase started from 21:00 on Monday, November 9. So far this year have been 10 eruptions of over 11 eruptive phases. This eruption formed a new lava flow that runs down the canyon Las Lajas in Alotenango, Sacatepequez, with approximately 1,500 meters in length causing avalanches. Ejected material is dispersed in a range of 10-12 km in wind direction.


  5. Rinjani these days (Photo: Apink Alkaff via Twitter):

    Announcement: Due to the activities of Mount Baru Jari Rinjani Lombok, closing of Praya Lombok International Airport was extended until Wednesday, November 11, 2015 at 8:45 pm. All its operations including arrivals and departures were canceled. We will keep you informed on further development.
    Thank you, Ketut Sarjana (Customer Service BIL)


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