Oxygen isotopic and soluble ionic composition of a shallow firn core, Inilchek glacier, central Tien Shan

Kreutz, K. J.; Aizen, Vladimir; Cecil, L. DeWayne; Wake, Cameron P.

doi:10.3189/172756501781831819

Cited by 48 publications

(60 citation statements)

References 36 publications

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“…The significantly different average ratio at Belukha glacier (median Cl À /Na + of 1.0) as well as its strong fluctuation (s = 0.8) are likely caused by the high continentality of the area. Any long-range transport of coarse-mode sea-salt aerosol is highly unlikely, as it is also the case in Tien Shan, northwest China [Kreutz et al, 2001]. Wake et al [1993] reported that sodium and chloride signals in the northeastern regions of the Tibetan Plateau could relate to monsoon precipitation but are effectively masked by sodium and chloride derived from the arid and semi-arid regions in China.…”

Section: Water-soluble Ionic Speciesmentioning

confidence: 99%

“…[22] Terrestrial dust has been postulated as the main source of sulfate and nitrate in Tien Shan snow [Wake et al, 1990;Williams et al, 1992;Sun et al, 1998;Kreutz et al, 2001]. The differing temporal trends observed for sulfate, nitrate and calcium suggest that dust is not the only source of those two anions in the Belukha region.…”

Section: Water-soluble Ionic Speciesmentioning

confidence: 99%

“…Wake et al [1993] reported that sodium and chloride signals in the northeastern regions of the Tibetan Plateau could relate to monsoon precipitation but are effectively masked by sodium and chloride derived from the arid and semi-arid regions in China. Sodium in Belukha glacier could additionally originate from evaporite deposits (halite) in the arid regions of the northern and western Tibetan Plateau [Shugui et al, 2003;Kreutz et al, 2001] and chloride from coal combustion.…”

Section: Water-soluble Ionic Speciesmentioning

confidence: 99%

“…Increases in agricultural activity and biomass burning produced elevated concentrations of ammonium during this time period [e.g. Döscher et al, 1996;Kreutz et al, 2001;Shugui et al, 2003]. Anthropogenic emissions also caused significant concentration changes of carbonaceous particles [Lavanchy et al, 1999] and heavy metals [e.g.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Glaciochemical investigation of an ice core from Belukha glacier, Siberian Altai

Olivier

Schwikowski

Brütsch

et al. 2003

Geophysical Research Letters

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Section: Water-soluble Ionic Speciesmentioning

confidence: 99%

Section: Water-soluble Ionic Speciesmentioning

confidence: 99%

Section: Water-soluble Ionic Speciesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Glaciochemical investigation of an ice core from Belukha glacier, Siberian Altai

Olivier

Schwikowski

Brütsch

et al. 2003

Geophysical Research Letters

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“…Zdanowicz et al (2012) Arctic Canada 2 560 0.3-0.6 polyth. Kreutz et al (2001) Tien method. Eight (Gries) and six (Silvretta) DEMs are available over the last five decades, documenting changes in glacier area and volume (Bauder et al, 2007).…”

Section: Glacier Geometrymentioning

confidence: 99%

Density assumptions for converting geodetic glacier volume change to mass change

2013

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Abstract. The geodetic method is widely used for assessing changes in the mass balance of mountain glaciers. However, comparison of repeated digital elevation models only provides a glacier volume change that must be converted to a change in mass using a density assumption or model. This study investigates the use of a constant factor for the volumeto-mass conversion based on a firn compaction model applied to simplified glacier geometries with idealized climate forcing, and two glaciers with long-term mass balance series. It is shown that the "density" of geodetic volume change is not a constant factor and is systematically smaller than ice density in most cases. This is explained by the accretion/removal of low-density firn layers, and changes in the firn density profile with positive/negative mass balance. Assuming a value of 850 ± 60 kg m −3 to convert volume change to mass change is appropriate for a wide range of conditions. For short time intervals (≤ 3 yr), periods with limited volume change, and/or changing mass balance gradients, the conversion factor can however vary from 0-2000 kg m −3 and beyond, which requires caution when interpreting glacier mass changes based on geodetic surveys.

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A twentieth century major soluble ion record of dust and anthropogenic pollutants from Inilchek Glacier, Tien Shan

et al. 2017

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Using a high‐resolution (~18 samples/year) major soluble ion record (Na+, K+, Mg2+, Ca2+, Cl−, NO3−, and SO42−) covering the period 1908–1995 A.D. from the Inilchek Glacier, Tien Shan, Kyrgyzstan, we provide a detailed climate and environmental proxy record for the region. Chemical concentrations, empirical orthogonal function analyses, and noncrustal excess calculations are used to identify natural and potential anthropogenic depositional trends. Dominant dust proxy species (i.e., Ca2+) reveal highest concentrations during the 1950s–1970s, with declining decadal trends through the end of the record. These trends likely reflect decreases in central Asian dust storm activity post‐1950, which has been associated with coupled atmospheric circulation variability and anthropogenic activities. Comparison between Ca2+ and ERA‐Interim (1979–1995) climate reanalysis data indicates a strong relationship to spring (March–May) geopotential height patterns in northwest China and southern Siberia associated with the Siberian High. Noncrustal contribution (excess) estimates of NO3−, K+, SO42−, and Cl− concentrations suggest discernable anthropogenic inputs began between the 1950s and 1970s, increased into the middle/late 1980s, and declined in the 1990s. Excess trends coincide with Former Soviet Union consumption, production, and emission of fossil fuels and fertilizers, reflecting the rapid growth of agriculture and industry, as well as economic declines in the middle to late 1980s/early 1990s. Excess‐Cl− trends reflect timings that coincide with the construction of the Pavlodar Chemical Plant and the military production of Cl2 in Kazakhstan. NOAA Hybrid Single‐Particle Lagrangian Integrated Trajectory back trajectory frequency analysis suggests eastern Uzbekistan (e.g., Fergana Valley), Kyrgyzstan, and southern Kazakhstan as the primary pollutant sources to the study region.

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Oxygen isotopic and soluble ionic composition of a shallow firn core, Inilchek glacier, central Tien Shan

Cited by 48 publications

References 36 publications

Glaciochemical investigation of an ice core from Belukha glacier, Siberian Altai

Glaciochemical investigation of an ice core from Belukha glacier, Siberian Altai

Density assumptions for converting geodetic glacier volume change to mass change

A twentieth century major soluble ion record of dust and anthropogenic pollutants from Inilchek Glacier, Tien Shan

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