3-3-3-3-3-3-3-3-3-3-3-3-3 From: Joan Marti Molist <joanmartimolist@xxxxxxxxx> Dear Colleagues, I write to draw your attention to the following workshop: *International Workshop 10th anniversary of Tagoro submarine eruption at El Hierro Island (October 2011)* El Hierro, Canary Islands, 7-11 October 2021 *Motivation* On October 10, 2011, after more than 15000 earthquakes were recorded in a 3-month period of unrest, a volcanic tremor was registered south of El Hierro, suggesting the beginning of a submarine eruption. The volcano, later named Tagoro, was located 1.8 km off the southern coast of the island and presented a south-westward lava flow. After March 2012, once the eruptive stage was over, Tagoro entered an active hydrothermal phase involving the release of an important amount of heat, gases, and metals to the water column. Ten years later, Tagoro submarine volcano is still active, producing significant physical-chemical and biological perturbation over one of the richest marine ecosystem in Europe, El Mar de Las Calmas and there is a good number of questions that have still not been properly answered: How the magmatic system prepared for the eruption?, which were the geodynamic constraints of the eruption?, how magma interacted with the crust?, why magma migrated so long during the unrest phase?, was the unrest phase correctly interpreted?, were the eruption phases well-identified?, How the marine ecosystem of El Hierro Island is adapting to these extreme physical-chemical anomalies?, Is the marine ecosystem significantly different than the surroundings? Did this extreme ambient generate new kinds of habitats? moreover, was the crisis well managed? was the local population aware of what was happening? was communication at all levels correct? etc. This has been the last eruption in the Canary Islands and occurred forty years after another eruption (TeneguÃa eruption) that occurred on La Palma, thus indicating that volcanism in the Canarian region is still alive and may return at any moment in the near future. In order to examine what we learned and what still remains to be learned from this last Canarian eruption, we invite you to participate in this international workshop that is organised with the aim to offer a forum of discussion on the Tagoro submarine eruption ten years after. The workshop will be open to all scientists, seeking the exchange of knowledge and views on what they learned from the Tagoro eruption and how this influenced their appreciation on volcanic activity and its potential impact on local society and environment. Policymakers, decision-makers, media, and other actors involved in the El Hierro crisis will also be invited to participate. Contributions on what we knew and what we learned from Tagoro submarine eruption and, in particular, on: 1) El Hierro magmatic system, 2) Eruption preparation, dynamics and hazards, 3) Environmental impacts of Tagoro submarine eruption over marine ecosystem, and 4) Crisis management during Tagoro submarine eruption, will be more than welcome. *Structure of the workshop* The main aims of the workshop is to offer an open an interdisciplinary and cross-boundary forum of discussion on the main aspects related to the 2011-2012 Tagoro submarine eruption at the El Hierro island: El Hierro magmatic system, eruption preparation and dynamics, environmental impacts of the eruption, and crisis management. According to this, the workshop will include four main scientific sessions, each one addressing one of the main goals. Each session will include introductory oral presentations (invited keynotes), posters examination, and a general discussion. We want to give emphasis to poster presentations and discussion forums rather than to short talks. A final general discussion session will be placed at the end of the meeting in order to summarise and discuss the main conclusions reached in each particular session, which will be collected and presented by their respective conveners. This final discussion will also help us to summarise the main conclusions of the meeting. *Number of participants* The workshop is restricted to *60* participants, who will be registered on a first-come basis. *Registration fee* To be decided. Will include documentation, opening ice-breaker, farewell dinner, and transportation and lunch pack during the excursion. *Venue* The workshop will be held at the Parador de El Hierro, where the reservation of several rooms, including accommodation and full board, has been made to allocate all the participants combining double and single rooms. *Program* *Thursday, October 7, 202*1 Arrival and accommodation at the Parador de El Hierro. Ice-breaker *Friday, October 8, 2021* 09h00- 13h00 Scientific session: El Hierro magmatic system 13h00-15h00 Lunch and poster session 15h00-19h00 Scientific session: Eruption preparation, dynamics and hazards 20h30 Dinner *Saturday, October 9, 2021* 09h00- 13h00 Scientific session: Environmental impacts of Tagoro submarine eruption over marine ecosystem 13h00-15h00 Lunch and poster session 15h00-19h00 Scientific session: Crisis management 20h30 Dinner *Sunday, October 10, 2021* 08h30-19h00. Field excursion 20h30 Farewell dinner *Sunday, October 11, 2021* Return home *Preregistration and additional information* In case you are interested in participating in this workshop, we recommend you to make a pre-registration by sending an email to joan.marti@xxxxxxxxxxxxx or joanmartimolist@xxxxxxxxx before the end of October 2020. The first circular with instructions to register, submit abstracts, a detailed preliminary programme, and local information will be distributed among all those who have pre-registered by the end of this year. 3-3-3-3-3-3-3-3-3-3-3-3-3 ------------------------------
