Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.3189/172756501781831819 |
Oxygen isotopic and soluble ionic composition of a shallow firn core, Inilchek glacier, central Tien Shan | |
Kreutz, KJ; Aizen, VB; Cecil, LD; Wake, CP | |
通讯作者 | Kreutz, KJ |
来源期刊 | JOURNAL OF GLACIOLOGY |
ISSN | 0022-1430 |
EISSN | 1727-5652 |
出版年 | 2001 |
卷号 | 47期号:159页码:548-554 |
英文摘要 | Oxygen isotopic and soluble ionic measurements made on snow-pit (2 in depth) and firn-core (12.4 m depth samples recovered from the accumulation zone 5100 m) of Inilchek glacier 43degrees N, 79degrees E) provide information on recent (1992-98) climatic and environmental conditions in the central Tien Shan region of central Asia. The combined 14.4 m snow-pit/firn-core profile lies within the firn zone, arid contains only one observed melt feature (10 m temperature = - 12 degreesC), Although some post-depositional attenuation of the sub-seasonal delta(18)O record is possible, annual cycles are apparent throughout the isotope profile. We therefore use the preserved delta(18)O record to establish a depth/age scale for the core. Mean delta(18)O values for the entire core and for summer periods are consistent with delta(18)O/temperature observations, and suggest the delta(18)O record provides a means to reconstruct past changes in summer surface temperature at the site. Major-ion (Na+, K+, Mg2+, Ca2+, NH4+, Cl-, NO3-, SO42-) data from the core demonstrate the dominant influence of dust deposition on the soluble chemistry at the site, arid indicate significant interannual variability in atmospheric-dust loading during the 1900s. Anthropogenic impacts oil NH4+ concentrations are observed at the site, and suggest a summer increase in atmospheric NH4+ that may be related to regional agricultural (nitrogen-rich fertilizer use activities. |
类型 | Article |
语种 | 英语 |
国家 | USA |
收录类别 | SCI-E |
WOS记录号 | WOS:000175252600003 |
WOS关键词 | TROPICAL ICE ; PRECIPITATION ; AMMONIUM ; HIMALAYA ; MONSOON ; AEROSOL ; SNOW |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
WOS研究方向 | Physical Geography ; Geology |
来源机构 | United States Geological Survey |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/141279 |
作者单位 | (1)Univ Maine, Dept Geol Sci, Orono, ME 04469 USA;(2)Univ Maine, Inst Quaternary & Climate Studies, Orono, ME 04469 USA;(3)Univ Calif Santa Barbara, Donald Bren Sch Environm Sci & Management, Santa Barbara, CA 93106 USA;(4)US Geol Survey, Idaho Falls, ID 83402 USA;(5)Univ New Hampshire, Climate Change Res Ctr, Inst Study Earth Oceans & Space, Durham, NH 03824 USA |
推荐引用方式 GB/T 7714 | Kreutz, KJ,Aizen, VB,Cecil, LD,et al. Oxygen isotopic and soluble ionic composition of a shallow firn core, Inilchek glacier, central Tien Shan[J]. United States Geological Survey,2001,47(159):548-554. |
APA | Kreutz, KJ,Aizen, VB,Cecil, LD,&Wake, CP.(2001).Oxygen isotopic and soluble ionic composition of a shallow firn core, Inilchek glacier, central Tien Shan.JOURNAL OF GLACIOLOGY,47(159),548-554. |
MLA | Kreutz, KJ,et al."Oxygen isotopic and soluble ionic composition of a shallow firn core, Inilchek glacier, central Tien Shan".JOURNAL OF GLACIOLOGY 47.159(2001):548-554. |
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