Dersleri yüzünden oldukça stresli bir ruh haline sikiş hikayeleri bürünüp özel matematik dersinden önce rahatlayabilmek için amatör pornolar kendisini yatak odasına kapatan genç adam telefonundan porno resimleri açtığı porno filmini keyifle seyir ederek yatağını mobil porno okşar ruh dinlendirici olduğunu iddia ettikleri özel sex resim bir masaj salonunda çalışan genç masör hem sağlık hem de huzur sikiş için gelip masaj yaptıracak olan kadını gördüğünde porn nutku tutulur tüm gün boyu seksi lezbiyenleri sikiş dikizleyerek onları en savunmasız anlarında fotoğraflayan azılı erkek lavaboya geçerek fotoğraflara bakıp koca yarağını keyifle okşamaya başlar

GET THE APP

Vietnam S Tropical Karst Is A Sink For Atmospheric Methane Greenhouse Gas | 48324
ISSN: 2157-7617

Journal of Earth Science & Climatic Change
Open Access

Our Group organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations
700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)
Google Scholar citation report
Citations : 5125

Journal of Earth Science & Climatic Change received 5125 citations as per Google Scholar report

Journal of Earth Science & Climatic Change peer review process verified at publons
Indexed In
  • CAS Source Index (CASSI)
  • Index Copernicus
  • Google Scholar
  • Sherpa Romeo
  • Online Access to Research in the Environment (OARE)
  • Open J Gate
  • Genamics JournalSeek
  • JournalTOCs
  • Ulrich's Periodicals Directory
  • Access to Global Online Research in Agriculture (AGORA)
  • Centre for Agriculture and Biosciences International (CABI)
  • RefSeek
  • Hamdard University
  • EBSCO A-Z
  • OCLC- WorldCat
  • Proquest Summons
  • SWB online catalog
  • Publons
  • Euro Pub
  • ICMJE
Share This Page

Vietnam s tropical karst is a sink for atmospheric methane greenhouse gas

5th International Conference on Earth Science & Climate Change

Arndt Schimmelmann, Jay T Lennon, Duong Nguyen-Thuy, Phuong Ta Hoa, Agnieszka Drobniak, Kevin D Webster and Minh Schimmelmann

Indiana University, USA VNU University of Science, Vietnam

ScientificTracks Abstracts: J Earth Sci Clim Change

DOI: 10.4172/2157-7617.C1.024

Abstract
The atmospheric concentration of the potent greenhouse gas methane (CH4) is globally rising mainly due to anthropogenic activities. Forecasting of global climate change by models requires knowledge of sources and sinks of greenhouse gas species. A mostly overlooked sink of CH4 is the microbial oxidation in subterranean environments following air exchange with the atmosphere. Northern Vietnam’s vast carbonate province with deeply incised tower karst valleys offers exposure of abundant air-filled voids (i.e. caves and other porosity). Air exchange is enhanced by steep topography (hence large surface area of carbonate exposure) and limited soil cover. Our international team used portable methane detectors (SARAD® RTM 2200, SARAD® GmbH, Germany, with Axetris methane module; Gasmet DX-4030 FTIR, Gasmet Technologies Oy, Finland) and mesocosm experiments in caves to confirm strong methanotrophic depletion of CH4 over 12 hours in contact with moist cave rocks. The warm and moist climate should maintain strong methanotrophic activity throughout the year. The methanotrophic capacity of a cave depends on its air exchange rate and the abundance of suitable microbial habitats. The exchange of cave air with outside air is enhanced by thermal gradients and outside wind. ‘Warm season’ measurements along transects in numerous caves in May 2012 produced distinct CH4 concentration profiles. Complementary ‘cold season’ measurements in November/December 2015 will complete the basis to estimate the year-round methanotrophic activities in surveyed caves, and by extrapolation will arrive at a regional estimate of the rate of methanotrophy in northern Vietnamese karst.
Biography

Arndt Schimmelmann completed his PhD in Geochemistry in 1985 at the University of California at Los Angeles, was a Post-doctoral researcher at Scripps Institution of Oceanography in California, USA, and is now a Senior Scientist in the Department of Geological Sciences at Indiana University in Indiana, USA. He has published more than 100 peer-reviewed papers.

Email: aschimme@indiana.edu

Top