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URI permanente para esta colecciónhttp://10.0.96.45:4000/handle/11056/14609
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Examinando Ponencias por Autor "Chacón Barrantes, Silvia"
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Ítem Characterizing tsunami signals from the Hunga Tonga-Hunga-Ha’apai eruption and its effects on the Caribbean(American Geophysical Union, 2022-12-13) Sostre-Cortés, Jelis; Vanacore, Elizabeth A.; von Hillebrandt-Andrade, Christa; Watlington, Roy A.; Joseph, Erouscilla P.; Dourado, Francisco; Colón Rodríguez, Benjamín; Fontaine, Fabrice J.; Chacón Barrantes, Silvia; Paris, Raphael; Robertson, Richard E.A.; Mercado, Aurelio; Gómez Ramos, Octavio; McNamara, Daniel E.; Soto, Stephanie; Clouard, Valerie; Brome, Alison; Aliaga, Bernardo; Kong, Laura S.L.; Deroussi, SebastienThe Hunga Tonga Hunga Ha'apai eruption of January 15 2022, was a rare geological event, resulting in atmospheric pressure waves being recorded around the world. The event caused significant environmental consequences, including sea-level fluctuations in the Caribbean. The focus of this research is to analyze the tsunami and pressure waves generated in the Caribbean, by this volcanic eruption. These perturbations are uncommon and have not been seen in many occurrences, let alone with global implications. Modern instrumentation in the Caribbean including both barometers and sea-level stations provided a unique opportunity to observe and analyze this event. A comprehensive review of the observations recorded in the Caribbean and adjacent regions linking the barometric observations to sea level perturbations, including observations of the lead/lag of the sea level perturbations relative to the barometric pressure spikes and the frequency content of observable sea level perturbations is presented in this study. For instance, at several stations in Puerto Rico, 7 barometric spikes were observed of which the first 3 generated a significant sea level observation. Notably in Puerto Rico the second barometric spike lagged the sea level anomaly by ~80 minutes. Factors complicating observations or non-observations such as land-water interactions as well as interference from factors such as a strong cold front will also be discussed. The goal of this study, which will integrate observations from across the Caribbean, is to better understand the nature of this unique event and how it was observed in the region. As such, this research can offer insight into the factors that may influence volcanic tsunamis, which is invaluable for developing tsunami warning and response protocols.Ítem Progress in Preparing a Draft 10-Year Research, Development, and Implementation Plan for Ocean Decade Tsunami Programme (2021-2030)(2022-10-25) Hayashi, Y; Tummala, S. K.; Angove, Michael; Barrientos, Sergio; Chacón Barrantes, Silvia; Coetze, David; Von Hillebrandt-Andrade, Christa; Rabinovich, Alexander; Rayahu, Harkunti; Schindele, Francois; Yahav, Amir; Aliaga Rossel, Bernardo; Bailey, Rick J.; Chang Seng, Dennis; Haidar, AngelosIn December 2017, the United Nations General Assembly adopted the 'United Nations Decade of Ocean Science for Sustainable Development (2021-2030)' resolution. It aims to significantly advance several research and technology development areas with a view to generating six societal outcomes (Ryabinin et al., 2019) including 'A Safe Ocean'. In June 2021, the Intergovernmental Oceanographic Commission (IOC) General Assembly established the 'Ocean Decade Tsunami Programme' (ODTP). The IOC also established the Scientific Committee (SC) as an advisory. The Working Group on Tsunamis and Other Hazards related to Sea Level Warning and Mitigation Systems (TOWS-WG) will act as the global steering committee of the ODTP. The implementation or coordination of roles for the regional aspects of the programme will be performed by four Intergovernmental Coordination Groups (ICGs). The SC has an advisory role to TOWS-WG for the duration of the ODTP. Members (two-year terms, renewable) of the SC are nominated by the TOWS-WG and each of the TOWS-WG Task Teams. It currently consists of 11 members (including the Chairperson S. K. TUMMALA) from 10 countries. The initial task of SC is to develop the Draft 10-Year Research, Development, and Implementation Plan for ODTP (Draft 10-Year Plan) for endorsement by the TOWS-WG. The committee has been preparing for the draft implementation plan by holding meetings in February and June 2022. It has extracted key issues on each area as follows: tsunami risk knowledge; monitoring, detection, and analysis and forecasting of tsunamis; warning dissemination and communication, preparedness, and response capabilities. The Draft 10-Year Plan will be promoting to advancing the monitoring, detection, analysis, and prediction of tsunamis, including those generated by non-seismic sources. The plan will include focus areas related to tsunami warning capabilities, such as the ITU/WMO/UNESCO-IOC Joint Task Force SMART Subsea Cables effort and collaboration with the Nippon Foundation-GEBCO Seabed 2030 project. The Draft 10-Year Plan will improve the societal outcome (A Safe Ocean) of the Ocean Decade with the aim of making 100% of the communities at risk of tsunami prepared for and resilient to tsunamis by 2030 through the implementation of the UNESCO/IOC Tsunami Ready Programme and other initiatives. Once the first draft is compiled, it will be made available to the member states of the IOC, scientific communities, and other stakeholders for comments. A final draft will be compiled by the committee on the basis of the collected opinions. Thereafter, the approval procedure will commence in IOC.