DOCSLIB.ORG

Books of Abstracts August 12-14, 2021

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Books of Abstracts August 12-14, 2021 OSICON-21OSICON-21 SeventhSeventh NaNationaltional ConferConferenceence ofof thethe OceanOcean SocietySociety ofof IndiaIndia Books of Abstracts August 12-14, 2021 Focal Theme: Ocean for Sustainable Development Dr. M. Ravichnadran President, Ocean Society of India (OSI) Director, National Centre for Polar and Ocean Research (NCPOR) Ministry of Earth Sciences (MoES), Goa Welcome Message ational Centre for Polar and Ocean Research (NCPOR) of Ministry of Earth Sciences, Government of India proud to be the host for the 7ʰ biennial edition of the NNational Conference of the Ocean Society of India (OSICON-21) in collaboration with Ocean Society of India (OSI) from 12-14 August 2021. The COVID-19 pandemic has an immense global impact and has claimed many casualties. Our deepest condolences go out to the people who have lost a loved one and to the people who have suffered during this pandemic. This year, while we regret that the COVID-19 pandemic prevented us from holding the conference in Goa, we are excited about the opportunities of holding an innovative virtual conference. The theme of the OSICON-21 three-day conference is “Ocean for Sustainable Development”. We expect that the online conference will enable you to share your research with other Indian Oceanographic communities and discuss the current issues related to research in Oceanography. There are three parallel sessions each day. The meeting includes a range of presentations, invited talks, oral presentations, and poster presentations, covering seven themes, viz (i) Marine ecosystems and Biogeochemistry of the Ocean, (ii) Coastal and open Ocean processes, (iii) Climate change, (iv) Polar Science and cryosphere, (v) Ocean Engineering and Technology, (vi) Marine Geology and Geophysics and (vii) Mathematics in Ocean sciences. I would like to thank and acknowledge the Chief Guest, invited speakers, Chairman and coordinators of the session, LOC, GC-OSI, advisory commiee, sponsors, delegates, and the support team who have worked hard to make this conference a truly successful one. I request all the delegates and participants to take part in all the activities that we have come up with for three days. I sincerely hope that this OSICON-21 conference will deliberate and discuss all the different facets of Oceanography and come up with recommendations that will lead to the development of sustainable oceans. I welcome you to this conference and look forward to your active and enthusiastic participation: we have so much to learn from each other. With best regards, (M. Ravichandran) President, OSI 2 Preface Dr. Avinash Kumar Dr. R.K. Mishra Dr. N. Anilkumar Co-Convener Co-Convener Convener he Ocean Society of India (OSI), established in 2006, acts as a medium for partaking in the gen and know-how of the entities, industrial organizations, research institutions Temployed in the various regimes of the ocean. It is a professional society encompassing Academicians, Researchers, Technologists and Engineers from Universities, Scientific Institutions and Industries occupied in the Ocean-Atmospheric related investigations. The OSI provides gaits towards information amelioration for the research and development of our country. OSI is organizing the OSICON biennial National Conference since 2009. Various reputed organizations and universities across the country have hosted the conference very successfully. Distinguished scientists, professors, research scholars, and students from several scientific institutes and universities have actively participated in the previous conferences. To date, six conferences are being conducted. The OSICON-21 is going to be held at National Centre for Polar and Ocean Research, Goa, during 12-14 August 2021. The conference is planned to be conducted on a virtual (online) platform. It is a prestigious tribute for us to release the Book of Abstracts of Seventh Biennial Conference of Ocean Society of India (OSI), organised by the National Centre for Polar and Ocean Research, Ministry of Earth Sciences, Government of India. We have received a prodigious riposte and splendid quality abstracts for all the scientific themes included in the present conference. Ocean, as an ecological unit, mollifies the global weather and climate. Nonetheless, due to the anthropogenic interferences, most of the ocean environments are geing too vulnerable to alleviate the climatic conditions. Accordingly, United Nations (UN) has asserted 'Decade of Ocean Science for Sustainable Development (2021-2030)' to enlighten mankind about the importance of the role of oceans in climatic variabilities. India’s Deep Ocean Mission launching will throw light on the unknown resources and their extraction from the deep ocean regimes. OSICON-21 provided an exceptional platform for the researchers in India to discuss their findings and future outlooks in the major themes Marine Ecosystem and Biogeochemistry of the Ocean, Climate and Climate Change, Coastal and open Ocean processes, Marine Geology and Geophysics, Ocean Engineering and Technology, Polar Science and Cryosphere, Mathematics in Ocean Science. The necessity for partaking in dazzling and inspiring concepts in this vital area of research is encountered with identical fervour and sustenance from the contributors as perceived from their retort to this platform. 3 PREFACE 4 The technical commiee carried out the peer review of all the abstracts with Dr. Prasad Bhaskaran, IIT, Kharagpur as the chairman. We express our sincere gratitude to all reviewers who helped us include the high-quality research papers in the conference proceedings. This Abstracts volume has 113 oral presentations and 103 poster presentations spread over 7 themes. Considering the present COVID scenario, only so copies of the conference proceedings were made available. This proceedings volume with abstracts is made to give wider publicity for the admirable scientific investigations going on in our country in the focal themes of this conference. We are exceptionally thankful to The President and GC Members of OSI for providing us with an opportunity to deliver our best efforts for the accomplishment of this conference. We are assertive that the scientific and technical contributions made by all the authors, invited speakers, chairmen and coordinators, advertisers, exhibitors, sponsors, and participants in this conference will augment to fill the knowledge gap in the various remote regimes of the oceans. We extend our sincere gratefulness to all the contributors. All members of the Organizing Commiee, especially Dr. Ravidas K Naik, Dr. Rohit Srivastava, Mr. Lalit Ahirwar, Dr. P. Sabu, Dr. Jenson V George, and all Technical Commiees members are extensively acknowledged for their immense support to conduct this conference successfully. We trust that OSICON-21 is the best juncture for making associations among the researchers. We delivered our responsibilities sincerely for the success of this conference and sorry for the apprehensions faced by you, if any. We wish you all a fruitful meeting. Avinash Kumar R.K. Mishra N. Anilkumar Co-Convener Co-Convener Convener Committees Advisory Committee Dr. Madhavan Nair Rajeevan, Former-Secretary, Ministry of Earth Sciences (MoES), Government of India Shailesh Nayak, Former-Secretary, MoES and Director, National Institute of Advanced Studies, Bengaluru. Dr. M. Mohapatra, DGM, IMD Dr. Prakash Chauhan, Director, IIRS Dr. Raj Kumar, Director, NRSC Dr. Virendra M. Tiwari, Director, NGRI Prof. Sunil Kumar Singh, Director, NIO Dr. A. Gopalakrishnan, Director, CMFRI Prof. Ravishankar Nanjundiah, Director, IITM Dr. M.V. Ramana Murthy, Director, NCCR Dr. G.A. Ramadass, Director, NIOT Dr. Srinivasa Kumar, Director, INCOIS Prof. Jyotiranjan S. Ray, Director, NCESS Dr. G.V.M Gupta, Director, CMLRE Dr. O.R. Nandagopan, Director, NSTL Mr. S. Vijayn Pillai, Director, NPOL Dr. M. Baba, Former Director, CESS Dr. N.P. Kurian, Former Director, NCESS M. Ravichandran, Director, NCPOR, President, OSI Dr. Basanta Kumar Jena, Gen. Secretary, OSI 5 COMMITTEES 6 Organizing Committee Dr. M. Ravichandran, NCPOR (Chairman) Dr. N. Anilkumar, Convener, NCPOR Dr. R.K. Mishra, Co-Convener, NCPOR Dr. Avinash Kumar, Co-Convener, NCPOR Prof. H.B. Menon, Member, Goa University Dr. S.C. Tripathy, Member, NCPOR Dr. Mani Murali R, Member, CSIR-NIO Mr. Lalit Kumar Ahirwar, Member, NCPOR Dr. P. Sabu, Member, NCPOR Dr. P.V. Bhaskar, Member, NCPOR Dr. Rohit Srivastava, Member, NCPOR Dr. Nuncio Murukesh, Member, NCPOR Dr. Jenson George, Member, NCPOR Dr. Ravidas K. Naik, Member, NCPOR COMMITTEES 7 OSI- Governing Council Dr. M. Ravichandran, President Dr. N.P. Kurian, Vice President Dr. Tata Sudhakar, Vice President Dr. Basanta Kumar Jena, Gen. Secretary Prof. Prasad K. Bhaskaran, Joint Secretary Dr. Mani Murali, Joint Secretary Dr. Smitha Balraj, Treasurer Dr. M. Baba, Member Dr. Vinu Valsala, Member Dr. Anand P., Member Mr. Eluri Pattabhi Ramarao, Member Dr. Prasad K.V.S., Member Dr. Kankara R.S., Member Dr. Jossia Joseph K., Member Dr. Vimlesh Pant, Member Dr. Marathadu Sudhakar, Ex-Officio Member Dr. C. Revichandran, Ex-Officio Member Prof. Jayachandran K.V., Chairman, Kochi Chapter Dr. Supriyo Chakraborty, Chairman, Pune Chapter Prof. Balasubramaniam, Chairman, Chennai Chapter th Time 12 AUGUST 2021: DAY 1 INAUGURATION 09:30 - 11:30 PLENARY TALK BY HON. FELLOW 11:30 - 11:45 TEA BREAK Bharati Hall Maitri Hall Himadri Hall PARALLEL SESSION 1 PARALLEL SESSION 2 PARALLEL SESSION 3 (Technical session-1) (Technical session-2) (Technical session-3) Marine
Load more

Recommended publications
  • Reduced Net Methane Emissions Due to Microbial Methane Oxidation in a Warmer Arctic
    LETTERS https://doi.org/10.1038/s41558-020-0734-z Reduced net methane emissions due to microbial methane oxidation in a warmer Arctic Youmi Oh 1, Qianlai Zhuang 1,2,3 ✉ , Licheng Liu1, Lisa R. Welp 1,2, Maggie C. Y. Lau4,9, Tullis C. Onstott4, David Medvigy 5, Lori Bruhwiler6, Edward J. Dlugokencky6, Gustaf Hugelius 7, Ludovica D’Imperio8 and Bo Elberling 8 Methane emissions from organic-rich soils in the Arctic have bacteria (methanotrophs) and the remainder is mostly emitted into been extensively studied due to their potential to increase the atmosphere (Fig. 1a). The methanotrophs in these wet organic the atmospheric methane burden as permafrost thaws1–3. soils may be low-affinity methanotrophs (LAMs) that require However, this methane source might have been overestimated >600 ppm of methane (by moles) for their growth and mainte- without considering high-affinity methanotrophs (HAMs; nance23. But in dry mineral soils, the dominant methanotrophs are methane-oxidizing bacteria) recently identified in Arctic min- high-affinity methanotrophs (HAMs), which can survive and grow 4–7 eral soils . Herein we find that integrating the dynamics of at a level of atmospheric methane abundance ([CH4]atm) of about HAMs and methanogens into a biogeochemistry model8–10 1.8 ppm (Fig. 1b)24. that includes permafrost soil organic carbon dynamics3 leads Quantification of the previously underestimated HAM-driven −1 to the upland methane sink doubling (~5.5 Tg CH4 yr ) north of methane sink is needed to improve our understanding of Arctic 50 °N in simulations from 2000–2016. The increase is equiva- methane budgets.
    [Show full text]
  • Is Rapid Climate Change in the Arctic a Planetary Emergency? Peter Carter, November 2013 Updated 2019
    Is Rapid Climate Change in the Arctic a Planetary Emergency? Peter Carter, November 2013 updated 2019. Introduction This paper presents a compelling case, supported by the climate change research, that the combination of: • global inaction on greenhouse gas emissions, • climate system inertias, and • multiple enormous Arctic sources of amplifying feedbacks (covered in this paper) constitutes an extreme-risk planetary emergency, for the survival of civilization, the human race and most life Research on climate change and the Arctic shows that we face a catastrophic risk of uncontrollable, accelerating global warming due to several amplifying feedbacks from enormous feedback sources in the Arctic. These include the Arctic snow/ice-albedo feedback and greenhouse gas feedbacks (methane, nitrous oxide, and carbon dioxide). Under global warming, the Arctic is changing far faster than other regions of Earth. Numerous – and extremely large – Arctic sources of amplifying feedbacks are already responding (have been triggered in response) to rapid Arctic warming. These Arctic feedbacks, if not addressed in time (now) and with the appropriate degree of mitigation, can only be expected to accelerate the rate of global warming. They constitute a very large risk of planetary catastrophic consequences, including Arctic greenhouse gas feedback so-called "runaway" chaotic climate disruption / runaway global heating/ hot house Earth. This paper describes global warming positive feedbacks already operant in the Arctic, and explains the large risk of planetary
    [Show full text]
  • Working Towards a Just Peace in the Middle East
    KAIROS Policy Briefing Papers are written to help inform public debate on key domestic and foreign policy issues No. 41 April 2015 Hopeful Signs, Alarming Realities on the Road to Climate Justice By John Dillon Ecological Economy Program Coordinator “Climate change for us is a matter of life or death.”1 waiting for the Paris conference to make decisions These stark words were spoken by Rev. Tafue Lu- that, in most cases, will take effect only in 2020. sama, General Secretary of the Tuvalu Christian Church, in September 2014 at an interfaith summit in New York. How prophetic they were in March 2015 when Super Cyclone Pam wreaked havoc on the Pa- cific island state, killing dozens and destroying thou- sands of homes in neighbouring Vanuatu. Rising sea levels and warmer water temperatures have increased the frequency and intensity of tropical storms like this one and Typhoon Haiyan, which struck the Philip- pines in 2013. Yet, although climate change is already devastating the lives of millions of vulnerable people, Rev. Olav Cyclone Pam survivors survey damage in Vanuatu. Tveit, General Secretary of the World Council of Churches, reminds us: “Despite all the negative condi- Hopeful signs include initiatives being undertaken tions, we have the right to hope, not as a passive wait- by some Canadian provinces such as putting a price ing but as an active process towards justice and on carbon emissions and declaring moratoria on hy- peace.”2 This Briefing Paper examines some hopeful draulic fracturing (fracking) to extract shale gas. As signs of progress in the struggle for climate justice, well, a number of civil society groups, such as Cli- despite major obstacles.
    [Show full text]
  • FIRST-ORDER DRAFT IPCC WGII AR5 Chapter 19 Do Not Cite, Quote
    FIRST-ORDER DRAFT IPCC WGII AR5 Chapter 19 1 Chapter 19. Emergent Risks and Key Vulnerabilities 2 3 Coordinating Lead Authors 4 Michael Oppenheimer (USA), Maximiliano Campos (Costa Rica) 5 6 Lead Authors 7 Joern Birkmann (Germany), George Luber (USA), Brian O’Neill (USA), Kiyoshi Takahashi (Japan), Rachel Warren 8 (UK) 9 10 Contributing Authors 11 Franz Berkhout (Netherlands), Pauline Dube (Botswana), Wendy Foden (South Africa), Stefan Greiving (Germany), 12 Solomon Hsiang (USA), Klaus Keller (USA), Joan Kleypas (USA), Robert Kopp (USA), Carlos Peres (UK), Jeff 13 Price (UK), Alan Robock (USA), Wolfram Schlenker (USA), Richard Tol (UK) 14 15 Review Editors 16 Mike Brklacich (Canada), Sergey Semenov (Russian Federation) 17 18 Chapter Scientist 19 Solomon Hsiang (USA) 20 21 22 Contents 23 24 Executive Summary 25 26 19.1. Purpose, Scope, and Structure of the Chapter 27 19.1.1. Historical Development of this Chapter 28 19.1.2. The Special Report on Managing the Risks of Extreme Events and Disasters to Advance Climate 29 Change Adaptation (SREX) 30 19.1.3. New Developments in this Chapter 31 32 19.2. Framework for Identifying Key Vulnerabilities, Key Risks, and Emergent Risks 33 19.2.1. Risk and Vulnerability 34 19.2.2. Criteria for Identifying Key Vulnerabilities and Key Risks 35 19.2.2.1. Criteria for Identifying Key Vulnerabilities 36 19.2.2.2. Criteria for Identifying Key Risks 37 19.2.3. Criteria for Identifying Emergent Risks 38 19.2.4. Identifying Key and Emergent Risks under Alternative Development Pathways 39 19.2.5. Assessing Key Vulnerabilities and Emergent Risks 40 41 19.3.
    [Show full text]
  • Intersectionality of Technology, People and Planning for Resilience 14Th August 2021 11.00 Am to 01.30 Pm
    WEBINAR Intersectionality of Technology, People and Planning for Resilience 14th August 2021 11.00 am to 01.30 pm Programme 11.00 am -11.15 am Welcome and Introduction - Prof Kajri Misra, Dean, Xavier School of Human Settlements, XIM University Bhubaneswar About BREUCom - Dr Barsha Paricha, Technical Specialist, Centre for Urban and Regional Excellence Inaugural Remarks - Prof. Dr. Fr Antony Uvary, S.J., Vice Chancellor, XIM University, Bhubaneswar - 11.15 am - 12.15 pm : Panel Discussion Understanding Intersectionality of Technology, People and Planning for Resilience Chair Prof Kajri Misra (3-4 minutes) The Chair will briefly introduce the relevance of the topic, key points for discussion, and the panellists (just name and designation). Short bios of each panellist will be shared on chat feature of Zoom. Panellists (7 minutes each): Each panellists will initially speak for 5-6 minutes sharing their perspective and experience. • Dr Barsha Paricha, Technical Specialist, Centre for Urban and Regional Excellence [focussing on case studies - 2, 3 & 8] • Dr. Tathagata Chatterjee, School of Human Settlements, XIM University • Dr. Partha Mukhopadhyay, Fellow, CPR Delhi Open Discussion (15 minutes) Participants will be encouraged to write their comments and questions using Q&A feature in Zoom. 3-4 participants can be requested to speak. Chair will request each panellist to respond to various questions and comments in 2 minutes. Consolidation by the Chair (5 minutes) Chair will consolidate the key points discussed in the session as well as add her/his perspectives. 12.15 pm - 12.20 pm Screen Break 12.20 pm – 01.20 pm :Roundtable Conversation Remodelling Urban Planning and Management Education for Future Urban Resilience This session will be conducted in three parts.
    [Show full text]
  • Nipfp-Iipf International Conference on “Papers in Public Finance” June 29-30 2021 New Delhi
    NIPFP-IIPF INTERNATIONAL CONFERENCE ON “PAPERS IN PUBLIC FINANCE” JUNE 29-30 2021 NEW DELHI Keynote Address June 29, 2021 (16.00-17.30 IST) “THE IMPACT OF THE CORONA CRISIS ON PUBLIC FINANCES” Clemens Fuest, President Ifo Institute and President, International Institute of Public Finance, Munich Chair : Pinaki Chakraborty, Director, National Institute of Public Finance And Policy, New Delhi NIPFP-IIPF Scientific Committee Chairs Paola Profeta , Professor, BOCCONI UNIVERSITY and Member, IIPF Board of Management Lekha Chakraborty, Professor, NIPFP and Member, IIPF Board of Management. Conference Co-ordinator Amandeep Kaur, Economist, NIPFP DAY 1- June 29, 2021 SESSION I - FISCAL POLICY, DEBT/DEFICITS AND ECONOMIC ACTIVITY Tuesday, June 29 (9.00-10.40 IST) Chair: ILA PATNAIK, Professor, NIPFP and former Principal Economic Advisor, Government of India, New Delhi, INDIA 1. Fiscal Dominance in India: Through the Windshield and 3. Lights out? COVID-19 Containment Policies and the Rearview Mirror (India 09.00) Economic Activity (India 09.00) Author: Anshuman Kamila (Department of Economic Affairs, Author: Robert C M Beyer (Macro, Trade and Investment Ministry of Finance, Government of India, New Delhi, INDIA) Global Practice, World Bank, Washington DC, US), and Discussant: Piyali Das Tarun Jain (Indian Institute of Management, Ahmedabad, INDIA), Sonalika Sinha (Reserve Bank of India, Mumbai, 2. Public Debt in India: A Security Level Analysis (India INDIA) 09.00) Discussant: Binod Kumar Behera Author::Piyali Das (Indian Institute of Management Indore, INDIA) and Chetan Ghate (Economics and Planning Unit, 4. Effect of Fiscal Deficit on Economic Growth Performance Indian Statistical Institute – Delhi, INDIA) of Indian States (India 09.00) Discussant: Tarun Jain Author: Binod Kumar Behera (Centre for Development Studies, Thiruvananthapuram, Kerala, INDIA) Discussant: Anshuman Kamila SESSION II: INTERNATIONAL TAXATION Tuesday, June 29 (11.30-13.10 IST) Chair: KAVITA RAO, Professor, NIPFP, New Delhi, INDIA 5.
    [Show full text]
  • Batch Profile 2020-22 Master of Business Finance XIM University (Erstwhile XIMB)
    Batch Profile 2020-22 Master of Business Finance XIM University (erstwhile XIMB) ABHISHEK DHIR Graduation Degree: B.Com, Utkal University Graduation Percentage: 65.3% Areas of Interest: Financial Statement Analysis, Law,Strategy Formulation Certification: Common Proficiency Test Position Of Responsibility: Junior Member of Alumni Committee, Social Responsibility Cell and PRESM Email:[email protected] Mobile No: +91-9437195100 ARCHIT GANERIWAL Graduation Degree: BBA (Finance and Accountancy), Christ University Graduation Percentage: 72.9% Work Experience: 28 Months, Dindayal Jalan Textiles Areas of Interest: Equity Research, Corporate Finance, Fixed Income, Valuations. Industry Research, Private Equity Internship / Training : TresVista Financial Services, PwC India Certification: ACCA (In-Progress) Position Of Responsibility: Junior member of Corporate Relation Team Email: [email protected] Mobile No.:+91-7355756142 MBF BATCH PROFILE, XIMU AYANTICA DHAR Graduation Degree: BBA, Gayatri Vidya Parishad, Andhra University Graduation Percentage: 8.78 CGPA Areas of Interest: investment banking, financial modelling, cost accounting, financial analysis, valuation, financial management, accounting. Certification: Tally, MS office and MS Excel . Position Of Responsibility: Junior member of InfinX , Sportscomm, X-cubate and PRESM Email: [email protected] Mobile No.: +91-9966710867 HARNEEL DESAI Graduation Degree: BBA (Finance), Amity Global Business School Graduation Percentage:8.83 CGPA Work Experience: 8 months, Appco Group
    [Show full text]
  • Consolidated List Private Universities
    UNIVERSITY GRANTS COMMISSION State-wise List of Private Universities as on 06.08.2021 S.No Name of Private University Date of Notification ARUNACHAL PRADESH 1. Apex Professional University, Pasighat, District East Siang, 10.05.2013 Arunachal Pradesh - 791102. 2. Arunachal University of Studies, NH-52, Namsai, Distt – Namsai 26.05.2012 - 792103, Arunachal Pradesh. 3. Arunodaya University, E-Sector, Nirjuli, Itanagar, Distt. Papum 21.10.2014 Pare, Arunachal Pradesh-791109 4. Himalayan University, 401, Takar Complex, Naharlagun, 03.05.2013 Itanagar, Distt – Papumpare – 791110, Arunachal Pradesh. 5. North East Frontier Technical University, Sibu-Puyi, Aalo 03.09.2014 (PO), West Siang (Distt.), Arunachal Pradesh –791001. 6. The Global University, Hollongi, Itanagar, Arunachal Pradesh. 18.09.2017 7. The Indira Gandhi Technological & Medical Sciences University, 26.05.2012 Ziro, Arunachal Pradesh. 8. Venkateshwara Open University, Itanagar, Arunachal Pradesh. 20.06.2012 Andhra Pradesh 9. Bharatiya Engineering Science and Technology Innovation 17.02.2019 University, Gownivaripalli, Gorantla Mandal, Anantapur, Andhra Pradesh 10. Centurian University of Technology and Management, Gidijala 23.05.2017 Junction, Anandpuram Mandal, Visakhapatnam- 531173, Andhra Pradesh. 11. KREA University, 5655, Central, Expressway, Sri City-517646, 30.04.2018 Andhra Pradesh 12. Saveetha Amaravati University, 3rd Floor, Vaishnavi Complex, 30.04.2018 Opposite Executive Club, Vijayawada- 520008, Andhra Pradesh 13. SRM University, Neerukonda-Kuragallu Village, mangalagiri 23.05.2017 Mandal, Guntur, Dist- 522502, Andhra Pradesh (Private University) 14. VIT-AP University, Amaravati- 522237, Andhra Pradesh (Private 23.05.2017 University) ASSAM 15. Assam Don Bosco University, Azara, Guwahati 12.02.2009 16. Assam Down Town University, Sankar Madhab Path, Gandhi 29.04.2010 Nagar, Panikhaiti, Guwahati – 781 036.
    [Show full text]
  • Stolerov Arctic Meth
    Critical Review pubs.acs.org/est Review of Methane Mitigation Technologies with Application to Rapid Release of Methane from the Arctic Joshuah K. Stolaroff,* Subarna Bhattacharyya, Clara A. Smith, William L. Bourcier, Philip J. Cameron-Smith, and Roger D. Aines Lawrence Livermore National Laboratory, Livermore, California, United States *S Supporting Information ABSTRACT: Methane is the most important greenhouse gas after carbon dioxide, with particular influence on near-term climate change. It poses increasing risk in the future from both direct anthropogenic sources and potential rapid release from the Arctic. A range of mitigation (emissions control) technologies have been developed for anthropogenic sources that can be developed for further application, including to Arctic sources. Significant gaps in understanding remain of the mechanisms, magnitude, and likelihood of rapid methane release from the Arctic. Methane may be released by several pathways, including lakes, wetlands, and oceans, and may be either uniform over large areas or concentrated in patches. Across Arctic sources, bubbles originating in the sediment are the most important mechanism for methane to reach the atmosphere. Most known technologies operate on confined gas streams of 0.1% methane or more, and may be applicable to limited Arctic sources where methane is concentrated in pockets. However, some mitigation strategies developed for rice paddies and agricultural soils are promising for Arctic wetlands and thawing permafrost. Other mitigation strategies specific to the Arctic have been proposed but have yet to be studied. Overall, we identify four avenues of research and development that can serve the dual purposes of addressing current methane sources and potential Arctic sources: (1) methane release detection and quantification, (2) mitigation units for small and remote methane streams, (3) mitigation methods for dilute (<1000 ppm) methane streams, and (4) understanding methanotroph and methanogen ecology.
    [Show full text]
  • Climatic Impact of Arctic Ocean Methane Hydrate Dissociation in The
    Earth Syst. Dynam. Discuss., https://doi.org/10.5194/esd-2017-110 Manuscript under review for journal Earth Syst. Dynam. Discussion started: 18 December 2017 c Author(s) 2017. CC BY 4.0 License. Climatic impact of Arctic Ocean methane hydrate dissociation in the 21st-century Sunil Vadakkepuliyambatta1*, Ragnhild B Skeie2, Gunnar Myhre2, Stig B Dalsøren2, Anna Silyakova1, Norbert Schmidbauer3, Cathrine Lund Myhre3, Jürgen Mienert1 1CAGE-Center for Arctic Gas Hydrate, Environment, and Climate, Department of Geosciences, UiT-The Arctic University of Norway, 9037 Tromsø, Norway. 2CICERO-Center for International Climate and Environmental Research – Oslo, PB. 1129 Blindern, 0318 Oslo, Norway. 3NILU - Norwegian Institute for Air Research, Instituttveien 18, 2027 Kjeller, Norway. 1 Abstract 2 Greenhouse gas methane trapped in sub-seafloor gas hydrates may play an important role in a 3 potential climate feedback system. The impact of future Arctic Ocean warming on the hydrate 4 stability and its contribution to atmospheric methane concentrations remains an important and 5 unanswered question. Here, we estimate the climate impact of released methane from oceanic 6 gas hydrates in the Arctic to the atmosphere towards the end of the 21st century, integrating 7 hydrate stability and atmospheric modeling. Based on future climate models, we estimate that 8 increasing ocean temperatures over the next 100 years could release up to 17 ± 6 Gt C into the 9 Arctic Ocean. However, the released methane has a limited or minor impact on the global 10 mean surface temperature, contributing only 0.1 % of the projected anthropogenic influenced 11 warming over the 21st century. 12 1.
    [Show full text]
  • Trends in Satellite Earth Observation for Permafrost Related Analyses—A Review
    remote sensing Review Trends in Satellite Earth Observation for Permafrost Related Analyses—A Review Marius Philipp 1,2,* , Andreas Dietz 2, Sebastian Buchelt 3 and Claudia Kuenzer 1,2 1 Department of Remote Sensing, Institute of Geography and Geology, University of Wuerzburg, D-97074 Wuerzburg, Germany; [email protected] 2 German Remote Sensing Data Center (DFD), German Aerospace Center (DLR), Muenchner Strasse 20, D-82234 Wessling, Germany; [email protected] 3 Department of Physical Geography, Institute of Geography and Geology, University of Wuerzburg, D-97074 Wuerzburg, Germany; [email protected] * Correspondence: [email protected] Abstract: Climate change and associated Arctic amplification cause a degradation of permafrost which in turn has major implications for the environment. The potential turnover of frozen ground from a carbon sink to a carbon source, eroding coastlines, landslides, amplified surface deformation and endangerment of human infrastructure are some of the consequences connected with thawing permafrost. Satellite remote sensing is hereby a powerful tool to identify and monitor these features and processes on a spatially explicit, cheap, operational, long-term basis and up to circum-Arctic scale. By filtering after a selection of relevant keywords, a total of 325 articles from 30 international journals published during the last two decades were analyzed based on study location, spatio- temporal resolution of applied remote sensing data, platform, sensor combination and studied environmental focus for a comprehensive overview of past achievements, current efforts, together with future challenges and opportunities. The temporal development of publication frequency, utilized platforms/sensors and the addressed environmental topic is thereby highlighted.
    [Show full text]
  • Postglacial Response of Arctic Ocean Gas Hydrates to Climatic Amelioration
    Postglacial response of Arctic Ocean gas hydrates to climatic amelioration Pavel Serova,1, Sunil Vadakkepuliyambattaa, Jürgen Mienerta, Henry Pattona, Alexey Portnova, Anna Silyakovaa, Giuliana Panieria, Michael L. Carrolla,b, JoLynn Carrolla,b, Karin Andreassena, and Alun Hubbarda,c aCentre for Arctic Gas Hydrate, Environment and Climate, Department of Geology, University of Tromsø - The Arctic University of Norway, 9037 Tromsø, Norway; bAkvaplan-niva, FRAM – High North Research Centre for Climate and the Environment, 9296 Tromsø, Norway; and cCentre of Glaciology, Aberystwyth University, Wales SY23 3DB, United Kingdom Edited by Mark H. Thiemens, University of California, San Diego, La Jolla, CA, and approved May 1, 2017 (received for review November 22, 2016) Seafloor methane release due to the thermal dissociation of gas methane-derived carbonate crusts and pavements formed above hydrates is pervasive across the continental margins of the Arctic gas venting systems, and, furthermore, hydrate dissociation within Ocean. Furthermore, there is increasing awareness that shallow sediments has been linked to megascale submarine landslides (12), hydrate-related methane seeps have appeared due to enhanced pockmarks (13), craters (14), and gas dome structures (15). warming of Arctic Ocean bottom water during the last century. Gas and water that constitute a hydrate crystalline solid within Although it has been argued that a gas hydrate gun could trigger the pore space of sediment remain stable within a gas hydrate abrupt climate change, the processes and rates of subsurface/ stability zone (GHSZ) that is a function of bottom water tem- atmospheric natural gas exchange remain uncertain. Here we perature, subbottom geothermal gradient, hydrostatic and litho- investigate the dynamics between gas hydrate stability and static pressure, pore water salinity, and the specific composition environmental changes from the height of the last glaciation of the natural gas concerned.
    [Show full text]