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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of volcanology 56 (1994), S. 435-446 
    ISSN: 1432-0819
    Keywords: Mount St Helens ; gas ; COSPEC sulfur dioxide ; in situ monitoring ; reducing gas
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The results from two different types of gas measurement, telemetered in situ monitoring of reducing gases on the dome and airborne measurements of sulfur dioxide emission rates in the plume by correlation spectrometry, suggest that the combination of these two methods is particularly effective in detecting periods of enhanced degassing that intermittently punctuate the normal background leakage of gaseous effluent from Mount St Helens to the atmosphere. Gas events were recorded before lava extrusion for each of the four dome-building episodes at Mount St Helens since mid-1984. For two of the episodes, precursory reducing gas peaks were detected, whereas during three of the episodes, COSPEC measurements recorded precursory degassing of sulfur dioxide. During one episode (October 1986), both reducing gas monitoring and SO2 emission rate measurements simultaneously detected a large gas release several hours before lava extrusion. Had both types of gas measurements been operational during each of the dome-building episodes, it is thought that both would have recorded precursory signals for all four episodes. Evidence from the data presented herein suggests that increased degassing at Mount St Helens becomes detectable when fresh upward-moving magma is between 2 km and a few hundred meters below the base of the dome and between about 60 and 12 hours before the surface extrusion of lava.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Bulletin of volcanology 56 (1994), S. 435-446 
    ISSN: 1432-0819
    Keywords: Key words Mount St Helens ; gas ; COSPEC ; sulfur dioxide ; in situ monitoring ; reducing gas
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract The results from two different types of gas measurement, telemetered in situ monitoring of reducing gases on the dome and airborne measurements of sulfur dioxide emission rates in the plume by correlation spectrometry, suggest that the combination of these two methods is particularly effective in detecting periods of enhanced degassing that intermittently punctuate the normal background leakage of gaseous effluent from Mount St Helens to the atmosphere. Gas events were recorded before lava extrusion for each of the four dome-building episodes at Mount St Helens since mid-1984. For two of the episodes, precursory reducing gas peaks were detected, whereas during three of the episodes, COSPEC measurements recorded precursory degassing of sulfur dioxide. During one episode (October 1986), both reducing gas monitoring and SO2 emission rate measurements simultaneously detected a large gas release several hours before lava extrusion. Had both types of gas measurements been operational during each of the dome-building episodes, it is thought that both would have recorded precursory signals for all four episodes. Evidence from the data presented herein suggests that increased degassing at Mount St Helens becomes detectable when fresh upward-moving magma is between 2 km and a few hundred meters below the base of the dome and between about 60 and 12 hours before the surface extrusion of lava.
    Type of Medium: Electronic Resource
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  • 3
    Publication Date: 2001-02-13
    Description: The Indian Ocean Experiment (INDOEX) was an international, multiplatform field campaign to measure long-range transport of air pollution from South and Southeast Asia toward the Indian Ocean during the dry monsoon season in January to March 1999. Surprisingly high pollution levels were observed over the entire northern Indian Ocean toward the Intertropical Convergence Zone at about 6 degrees S. We show that agricultural burning and especially biofuel use enhance carbon monoxide concentrations. Fossil fuel combustion and biomass burning cause a high aerosol loading. The growing pollution in this region gives rise to extensive air quality degradation with local, regional, and global implications, including a reduction of the oxidizing power of the atmosphere.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Lelieveld, J -- Crutzen, P J -- Ramanathan, V -- Andreae, M O -- Brenninkmeijer, C M -- Campos, T -- Cass, G R -- Dickerson, R R -- Fischer, H -- de Gouw, J A -- Hansel, A -- Jefferson, A -- Kley, D -- de Laat, A T -- Lal, S -- Lawrence, M G -- Lobert, J M -- Mayol-Bracero, O L -- Mitra, A P -- Novakov, T -- Oltmans, S J -- Prather, K A -- Reiner, T -- Rodhe, H -- Scheeren, H A -- Sikka, D -- Williams, J -- New York, N.Y. -- Science. 2001 Feb 9;291(5506):1031-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Max-Planck-Institute for Chemistry, Post Office Box 3060, D-55020 Mainz, Germany. lelieveld@mpch-mainz.mpg.de〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/11161214" target="_blank"〉PubMed〈/a〉
    Keywords: Aerosols ; Agriculture ; *Air Pollution ; Asia ; Asia, Southeastern ; Atmosphere ; Biomass ; Carbon ; Carbon Monoxide ; Coal Ash ; Fossil Fuels ; Industrial Waste ; Nitrogen Oxides ; Oceans and Seas ; Ozone ; Particulate Matter ; Seasons
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 4
    Publication Date: 2008-10-11
    Description: Knowledge of mammalian diversity is still surprisingly disparate, both regionally and taxonomically. Here, we present a comprehensive assessment of the conservation status and distribution of the world's mammals. Data, compiled by 1700+ experts, cover all 5487 species, including marine mammals. Global macroecological patterns are very different for land and marine species but suggest common mechanisms driving diversity and endemism across systems. Compared with land species, threat levels are higher among marine mammals, driven by different processes (accidental mortality and pollution, rather than habitat loss), and are spatially distinct (peaking in northern oceans, rather than in Southeast Asia). Marine mammals are also disproportionately poorly known. These data are made freely available to support further scientific developments and conservation action.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Schipper, Jan -- Chanson, Janice S -- Chiozza, Federica -- Cox, Neil A -- Hoffmann, Michael -- Katariya, Vineet -- Lamoreux, John -- Rodrigues, Ana S L -- Stuart, Simon N -- Temple, Helen J -- Baillie, Jonathan -- Boitani, Luigi -- Lacher, Thomas E Jr -- Mittermeier, Russell A -- Smith, Andrew T -- Absolon, Daniel -- Aguiar, John M -- Amori, Giovanni -- Bakkour, Noura -- Baldi, Ricardo -- Berridge, Richard J -- Bielby, Jon -- Black, Patricia Ann -- Blanc, J Julian -- Brooks, Thomas M -- Burton, James A -- Butynski, Thomas M -- Catullo, Gianluca -- Chapman, Roselle -- Cokeliss, Zoe -- Collen, Ben -- Conroy, Jim -- Cooke, Justin G -- da Fonseca, Gustavo A B -- Derocher, Andrew E -- Dublin, Holly T -- Duckworth, J W -- Emmons, Louise -- Emslie, Richard H -- Festa-Bianchet, Marco -- Foster, Matt -- Foster, Sabrina -- Garshelis, David L -- Gates, Cormack -- Gimenez-Dixon, Mariano -- Gonzalez, Susana -- Gonzalez-Maya, Jose Fernando -- Good, Tatjana C -- Hammerson, Geoffrey -- Hammond, Philip S -- Happold, David -- Happold, Meredith -- Hare, John -- Harris, Richard B -- Hawkins, Clare E -- Haywood, Mandy -- Heaney, Lawrence R -- Hedges, Simon -- Helgen, Kristofer M -- Hilton-Taylor, Craig -- Hussain, Syed Ainul -- Ishii, Nobuo -- Jefferson, Thomas A -- Jenkins, Richard K B -- Johnston, Charlotte H -- Keith, Mark -- Kingdon, Jonathan -- Knox, David H -- Kovacs, Kit M -- Langhammer, Penny -- Leus, Kristin -- Lewison, Rebecca -- Lichtenstein, Gabriela -- Lowry, Lloyd F -- Macavoy, Zoe -- Mace, Georgina M -- Mallon, David P -- Masi, Monica -- McKnight, Meghan W -- Medellin, Rodrigo A -- Medici, Patricia -- Mills, Gus -- Moehlman, Patricia D -- Molur, Sanjay -- Mora, Arturo -- Nowell, Kristin -- Oates, John F -- Olech, Wanda -- Oliver, William R L -- Oprea, Monik -- Patterson, Bruce D -- Perrin, William F -- Polidoro, Beth A -- Pollock, Caroline -- Powel, Abigail -- Protas, Yelizaveta -- Racey, Paul -- Ragle, Jim -- Ramani, Pavithra -- Rathbun, Galen -- Reeves, Randall R -- Reilly, Stephen B -- Reynolds, John E 3rd -- Rondinini, Carlo -- Rosell-Ambal, Ruth Grace -- Rulli, Monica -- Rylands, Anthony B -- Savini, Simona -- Schank, Cody J -- Sechrest, Wes -- Self-Sullivan, Caryn -- Shoemaker, Alan -- Sillero-Zubiri, Claudio -- De Silva, Naamal -- Smith, David E -- Srinivasulu, Chelmala -- Stephenson, Peter J -- van Strien, Nico -- Talukdar, Bibhab Kumar -- Taylor, Barbara L -- Timmins, Rob -- Tirira, Diego G -- Tognelli, Marcelo F -- Tsytsulina, Katerina -- Veiga, Liza M -- Vie, Jean-Christophe -- Williamson, Elizabeth A -- Wyatt, Sarah A -- Xie, Yan -- Young, Bruce E -- New York, N.Y. -- Science. 2008 Oct 10;322(5899):225-30. doi: 10.1126/science.1165115.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉International Union for Conservation of Nature (IUCN) Species Programme, IUCN, 28 Rue Mauverney, 1196 Gland, Switzerland. jan.schipper@iucn.org〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/18845749" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Biodiversity ; Body Size ; Conservation of Natural Resources ; Databases, Factual ; Ecosystem ; *Extinction, Biological ; *Mammals/anatomy & histology/classification/physiology ; Marine Biology ; Phylogeny ; Population Dynamics ; Seawater
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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