Impacts of wind velocity on sand and dust deposition during dust storm as inferred from a series of observations in the northeastern Qinghai–Tibetan Plateau, China

2007 ◽  
Vol 175 (2) ◽  
pp. 82-89 ◽  
Author(s):  
Mingrui Qiang ◽  
Fahu Chen ◽  
Aifeng Zhou ◽  
Shun Xiao ◽  
Jiawu Zhang ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Wind Velocity ◽  
Dust Storm ◽  
Dust Deposition

scholarly journals Numerical simulations of dust fluxes to the eastern Qinghai-Tibetan Plateau: Comparison of model results with a Holocene peat record of dust deposition

2013 ◽  
Vol 118 (10) ◽  
pp. 4597-4609 ◽  
Author(s):  
Marion Ferrat ◽  
Baerbel Langmann ◽  
Xuefeng Cui ◽  
Jefferson Gomes ◽  
Dominik J. Weiss
Keyword(s):  
Tibetan Plateau ◽  
Numerical Simulations ◽  
Dust Deposition

scholarly journals Sediment transport processes across the Tibetan Plateau inferred from robust grain-size end members in lake sediments

2014 ◽  
Vol 10 (1) ◽  
pp. 91-106 ◽  
Author(s):  
E. Dietze ◽  
F. Maussion ◽  
M. Ahlborn ◽  
B. Diekmann ◽  
K. Hartmann ◽  
...  
Keyword(s):  
Grain Size ◽  
Sediment Transport ◽  
Tibetan Plateau ◽  
Transport Processes ◽  
The Tibetan Plateau ◽  
Dust Deposition ◽  
Northerly Wind ◽  
Near Surface ◽  
Depositional Processes ◽  
End Members

Abstract. Grain-size distributions offer powerful proxies of past environmental conditions that are related to sediment sorting processes. However, they are often of multimodal character because sediments can get mixed during deposition. To facilitate the use of grain size as palaeoenvironmental proxy, this study aims to distinguish the main detrital processes that contribute to lacustrine sedimentation across the Tibetan Plateau using grain-size end-member modelling analysis. Between three and five robust grain-size end-member subpopulations were distinguished at different sites from similarly–likely end-member model runs. Their main modes were grouped and linked to common sediment transport and depositional processes that can be associated with contemporary Tibetan climate (precipitation patterns and lake ice phenology, gridded wind and shear stress data from the High Asia Reanalysis) and local catchment configurations. The coarse sands and clays with grain-size modes >250 μm and <2 μm were probably transported by fluvial processes. Aeolian sands (~200 μm) and coarse local dust (~60 μm), transported by saltation and in near-surface suspension clouds, are probably related to occasional westerly storms in winter and spring. Coarse regional dust with modes ~25 μm may derive from near-by sources that keep in longer term suspension. The continuous background dust is differentiated into two robust end members (modes: 5–10 and 2–5 μm) that may represent different sources, wind directions and/or sediment trapping dynamics from long-range, upper-level westerly and episodic northerly wind transport. According to this study grain-size end members of only fluvial origin contribute small amounts to mean Tibetan lake sedimentation (19± 5%), whereas local to regional aeolian transport and background dust deposition dominate the clastic sedimentation in Tibetan lakes (contributions: 42 ± 14% and 51 ± 11%). However, fluvial and alluvial reworking of aeolian material from nearby slopes during summer seems to limit end-member interpretation and should be crosschecked with other proxy information. If not considered as a stand-alone proxy, a high transferability to other regions and sediment archives allows helpful reconstructions of past sedimentation history.

Comment on 'Impacts of aeolian dust deposition on phytoplankton dynamics in Queensland coastal waters' by Shaw et al. (2008)

2010 ◽  
Vol 61 (4) ◽  
pp. 502 ◽  
Author(s):  
Doug Mackie
Keyword(s):  
Causative Agent ◽  
Coastal Waters ◽  
Dust Storm ◽  
Phytoplankton Dynamics ◽  
Dust Deposition ◽  
Aeolian Dust

The central premise of the paper by Shaw et al. (2008) (hereafter SGM) is that phytoplankton in coastal waters of Queensland, Australia, were nutrient-limited and that biomass increased immediately following a large dust storm in October 2002. I will show that (i) the timing of the phytoplankton response precludes the dust storm as a causative agent for chlorophyll increases and (ii) it is not clear that there was actually any change in chlorophyll in response to the dust storm.

scholarly journals A super Asian dust storm over the East and South China Seas: Disproportionate dust deposition

2013 ◽  
Vol 118 (13) ◽  
pp. 7169-7181 ◽  
Author(s):  
Shih-Chieh Hsu ◽  
Fujung Tsai ◽  
Fei-Jan Lin ◽  
Wei-Nai Chen ◽  
Fuh-Kwo Shiah ◽  
...  
Keyword(s):  
South China ◽  
Dust Storm ◽  
Asian Dust ◽  
China Seas ◽  
Dust Deposition ◽  
Asian Dust Storm

scholarly journals Relationship between thermal anomalies in Tibetan Plateau and summer dust storm frequency over Tarim Basin, China

2012 ◽  
Vol 5 (1) ◽  
pp. 25-31 ◽  
Author(s):  
Yong Zhao ◽  
HongJun Li ◽  
AnNing Huang ◽  
Qing He ◽  
Wen Huo ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Tarim Basin ◽  
Dust Storm ◽  
Thermal Anomalies ◽  
Storm Frequency

scholarly journals Tasman Sea biological response to dust storm events during the austral spring of 2009

2016 ◽  
Vol 67 (8) ◽  
pp. 1090 ◽  
Author(s):  
A. J. Gabric ◽  
R. Cropp ◽  
G. McTainsh ◽  
H. Butler ◽  
B. M. Johnston ◽  
...  
Keyword(s):  
Dust Storm ◽  
Biological Response ◽  
Heavy Precipitation ◽  
Iron Bioavailability ◽  
Dust Storms ◽  
Storm Events ◽  
Dust Deposition ◽  
Austral Spring ◽  
Tasman Sea

During the austral spring of 2009 several significant dust storms occurred in south-east Australia including the so-called ‘Red Dawn’ event in late September. Estimates of 2.5 Mt total suspended particulate sediment lost off the Australian coast in the 3000km long dust plume make it the largest off-continent loss of soil ever reported. Much of this material was transported over the coastline of New South Wales and into the adjacent Tasman Sea. Long-term model simulations of dust deposition over the south-west Tasman Sea suggest the amount deposited during the spring of 2009 was approximately three times the long-term monthly average. Previous satellite-based analyses of the biological response of Tasman Sea waters to dust-derived nutrients are equivocal or have observed no response. Satellite-derived surface chlorophyll concentrations in the southern Tasman during the spring of 2009 are well above the climatological mean, with positive anomalies as high as 0.5mgm–3. Dust transport simulations indicate strong deposition to the ocean surface, which during both the ‘Red Dawn’ event and mid-October 2009 dust storm events was enhanced by heavy precipitation. Cloud processing of the dust aerosol may have enhanced iron bioavailability for phytoplankton uptake.

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