World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Concentration Maxima of Volatile Organic Iodine Compounds in the Bottom Layer Water and the Cold, Dense Water Over the Chukchi Sea in the Western Arctic Ocean: a Possibility of Production Related to Degradation of Organic Matter : Volume 12, Issue 14 (17/07/2015)

By Ooki, A.

Click here to view

Book Id: WPLBN0003987478
Format Type: PDF Article :
File Size: Pages 34
Reproduction Date: 2015

Title: Concentration Maxima of Volatile Organic Iodine Compounds in the Bottom Layer Water and the Cold, Dense Water Over the Chukchi Sea in the Western Arctic Ocean: a Possibility of Production Related to Degradation of Organic Matter : Volume 12, Issue 14 (17/07/2015)  
Author: Ooki, A.
Volume: Vol. 12, Issue 14
Language: English
Subject: Science, Biogeosciences, Discussions
Collections: Periodicals: Journal and Magazine Collection (Contemporary), Copernicus GmbH
Historic
Publication Date:
2015
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Nishino, S., Kawasaki, S., Kikuchi, T., Ooki, A., & Kuma, K. (2015). Concentration Maxima of Volatile Organic Iodine Compounds in the Bottom Layer Water and the Cold, Dense Water Over the Chukchi Sea in the Western Arctic Ocean: a Possibility of Production Related to Degradation of Organic Matter : Volume 12, Issue 14 (17/07/2015). Retrieved from http://www.ebooklibrary.org/


Description
Description: Faculty of Fisheries Sciences, Hokkaido University, Hakodate, Japan. We conducted a shipboard observation over the Chukchi Sea and the Canada Basin in the western Arctic Ocean in September and October 2012 to obtain vertical distributions of four volatile organic iodine compounds (VOIs) in seawater. VOIs are believed to play a role in ozone destruction in the troposphere and lower stratosphere. The VOIs observed in this study were iodomethane (CH3I), iodoethane (C2H5I), diiodomethane (CH2I2) and chloroiodomethane (CH2ClI). Maximum concentrations of the four VOIs were found in the bottom layer water over the Chukchi Sea shelf, in which layer the maximum concentration of ammonium (NH4+) also occurred. A significant correlation was observed between C2H5I and NH4+ (correlate coefficient R = 0.93) and between CH3I and NH4+ (R = 0.77), suggesting production of these VOIs increased with degradation of organic matter. Over the northern Chukchi Sea shelf–slope area, concentration maxima of CH2I2, CH2ClI, and CH3I were found in the subsurface cold, dense water (CDW). A large nitrogen deficit (N-deficit = NH4+ + NO3 + NO2 − 16PO43−) simultaneously occurred in this water, suggesting production of the three VOIs in the sediment or the bottom layer water over the shelf, probably in association with degradation of organic matter. We conclude that VOI production over the Chukchi Sea shelf can be largely attributed to the degradation of organic matter that is produced in the highly productive shelf water. High concentrations of CH2ClI were also found in the Alaskan Coastal Water (ACW) from the Bering Strait to the surface of the northern Chukchi slope. The VOIs that originated at the Chukchi Sea shelf are expected to be laterally transported to the Arctic Ocean Basin though the subsurface CDW and the surface ACW.

Summary
Concentration maxima of volatile organic iodine compounds in the bottom layer water and the cold, dense water over the Chukchi Sea in the western Arctic Ocean: a possibility of production related to degradation of organic matter

Excerpt
Amachi, S., Muramatsu, Y., Akiyama, Y., Miyazaki, K., Yoshiki, S., Hanada, S., Kamagata, Y., Ban-nai, T., Shinoyama, H., and Fujii, T.: Isolation of iodide-oxidizing bacteria from iodide-rich natural gas brines and seawaters, Microb. Ecol., 49, 547–557, doi:10.1007/s00248-004-0056-0, 2005.; Anderson, L. G., Andersson, P. S., Bjork, G., Jones, E. P., Jutterstrom, S., and Wahlstrom, I.: Source and formation of the upper halocline of the Arctic Ocean, J. Geophys. Res., 118, 410–421, doi:10.1029/2012JC008291, 2013.; Anschutz, P., Sundby, B., Lefrancois, L., Luther, G. W., and Mucci, A.: Interactions between metal oxides and species of nitrogen and iodine in bioturbated marine sediments, Geochim. Cosmochim. Ac., 64, 2751–2763, doi:10.1016/S0016-7037(00)00400-2, 2000.; Archer, S. D., Goldson, L. E., Liddicoat, M. I., Cummings, D. G., and Nightingale, P. D.: Marked seasonality in the concentrations and sea-to-air flux of volatile iodocarbon compounds in the western English Channel, J. Geophys. Res., 112, C08009, doi:10.1029/2006JC003963, 2007.; Atkinson, H. M., Hughes, C., Shaw, M. J., Roscoe, H. K., Carpenter, L. J., and Liss, P. S.: Halocarbons associated with Arctic sea ice, Deep-Sea Res., 92, 162–175, doi:10.1016/j.dsr.2014.05.012, 2014.; Carpenter, L. J., Sturges, W. T., Penkett, S. A., Liss, P. S., Alicke, B., Hebestreit, K., and Platt, U.: Short-lived alkyl iodides and bromides at Mace Head, Ireland: links to biogenic sources and halogen oxide production, J. Geophys. Res., 104, 1679–1689, doi:10.1029/98JD02746, 1999.; Carpenter, L. J., Hopkins, J. R., Jones, C. E., Lewis, A. C., Parthipan, R., Wevill, D. J., Poissant, L., Pilote, M., and Constant, P.: Abiotic source of reactive organic halogens in the sub-arctic atmosphere, Environ. Sci. Technol., 39, 8812–8816, doi:10.1021/es050918w, 2005.; Christman, G. D., Cottrell, M. T., Popp, B. N., Gier, E., and Kirchman, D. L.: Abundance, diversity, and activity of ammonia-oxidizing prokaryotes in the coastal Arctic Ocean in summer and winter, Appl. Environ. Microb., 77, 2026–2034, doi:10.1128/AEM.01907-10, 2011.; Codispoti, L. A., Flagg, C., Kelly, V., and Swift, J. H.: Hydrographic conditions during the 2002 SBI process experiments, Deep-Sea Res. II, 52, 3199–3226, doi:10.1016/j.dsr2.2005.10.007, 2005.; Cota, G. F., Pomeroy, L. R., Harrison, W. G., Jones, E. P., Peters, F., Sheldon, W. M., and Weingartner, T. R.: Nutrients, primary production and microbial heterotrophy in the southeastern Chukchi Sea: Arctic summer nutrient depletion and heterotrophy, Mar. Ecol.-Prog. Ser., 135, 247–258, doi:10.3354/meps135247, 1996.; Devol, A. H., Codispoti, L. A., and Christensen, J. P.: Summer and winter denitrification rates in western Arctic shelf sediments, Cont. Shelf Res., 17, 1029–1050, doi:10.1016/S0278-4343(97)00003-4, 1997.; Fuse, H., Inoue, H., Murakami, K., Takimura, O., and Yamaoka, Y.: Production of free and organic iodine by Roseovarius spp., FEMS Microbiol. Lett., 229, 189–194, doi:10.1016/S0378-1097(03)00839-5, 2003.; Grebmeier, J. M., McRoy, C. P., and Feder, H. M.: Pelagic-benthic coupling on the shelf of the northern Bering and Chukchi Seas. I. Food supply source and benthic biomass

 

Click To View

Additional Books


  • Perspectives of the Microbial Carbon Pum... (by )
  • Autonomous Profiling Float Observations ... (by )
  • Carbon and Oxygen Isotope Analysis of Le... (by )
  • The Subtle Effects of Sea Water Acidific... (by )
  • Spatial Variability and Temporal Dynamic... (by )
  • Continuous Measurement of Soil Co2 Efflu... (by )
  • Chemodiversity in Terpene Emissions at a... (by )
  • Phytoplankton Blooms Induced/Sustained b... (by )
  • Subseafloor Basalts as Fungal Habitats :... (by )
  • Detection of Pore Space in Ct Soil Image... (by )
  • Multi-decadal Uptake of Carbon Dioxide I... (by )
  • How Do Tree Competition and Stand Dynami... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.