Results 51 to 60 of about 233,985 (228)

Eolian dust dispersal patterns since the last glacial period in eastern Central Asia: insights from a loess-paleosol sequence in the Ili Basin [PDF]

Climate of the Past, 2018
The extensive loess deposits of the Eurasian mid-latitudes provide important terrestrial archives of Quaternary climatic change. As yet, however, loess records in Central Asia are poorly understood.
Y. Li, Y. Li, Y. Li, Y. Song, K. E. Fitzsimmons, H. Chang, R. Orozbaev, R. Orozbaev, X. Li   +8 more
doaj   +1 more source

Revealing Dust Source Changes in East Asia From Past to Future: An Interpretable Deep Learning Approach

Land Degradation &Development, EarlyView.
ABSTRACT Aeolian dust source areas are controlled by climate and human activities and are closely associated with land degradation, yet their long‐term evolution under global warming remains insufficiently quantified. An integrated framework that couples a U‐Net segmentation model with Shapley Additive Explanations (SHAP) was built to map and attribute
Yanyu Li, Qizhong Wu, Xueshun Chen, Jiang Yue, Jieying He, Huaqiong Cheng   +5 more
wiley   +1 more source

Eolian dust activity during the last similar to 850 years on the southeastern margin of the arid Central Asia

, 2020
Eolian dust activity studies on the arid Central Asia (ACA), one of the world's largest dust sources, are of great importance to the global climatic system.
Hu, Jing, Wu, Xudong, Li, Junfeng, Ji, Ming, Wang, Min, Cao, Yunning, Li, Xiangzhong, Zhang, Pu   +7 more
core   +1 more source

Soil Pollution with Copper, Lead and Zinc in the Surroundings of Large Copper Ore Tailings Impoundment

Environmental Protection and Natural Resources, 2014
Analysis of the top-soil total content of heavy metals was carried out inthe vicinity of large copper ore tailings pound in the south-western Poland with regard to soil properties, direction and distance from the tailings pound.
Musztyfaga Elżbieta, Kabała Cezary, Bielińska Agata Urszula, Cuske Mateusz, Gałka Bernard   +4 more
doaj   +1 more source

Introduction to project DUNE, a DUst experiment in a low Nutrient, low chlorophyll Ecosystem [PDF]

Biogeosciences, 2014
The main goal of project DUNE was to estimate the impact of atmospheric deposition on an oligotrophic ecosystem based on mesocosm experiments simulating strong atmospheric inputs of eolian mineral dust.
C. Guieu, F. Dulac, C. Ridame, P. Pondaven   +3 more
doaj   +1 more source

Geochemistry of Surface Sediments From the Emperor Seamount Chain, North Pacific

Frontiers in Earth Science, 2021
Investigating the composition and distribution of pelagic marine sediments is fundamental in the field of marine sedimentology. The spatial distributions of surface sediment are unclear due to limited investigation along the Emperor Seamount Chain of the
Jie Chen, Jianjun Zou, Jianjun Zou, Aimei Zhu, Aimei Zhu, Xuefa Shi, Xuefa Shi, Dirk Nürnberg, Lester Lembke-Jene, Ralf Tiedemann, Kunshan Wang, Kunshan Wang, Yonghua Wu, Yonghua Wu, Zhi Dong, Zhi Dong, Jianxing Liu, Jianxing Liu, Ruxi Dou   +18 more
doaj   +1 more source

Phosphorus limits the growth of bacterial and eukaryotic primary producers in recently deglaciated High Arctic soils

Oikos, EarlyView.
Glaciers are receding at unprecedented rates worldwide, exposing large areas of barren sediment that are quickly colonized by microbes. Nutrient availability is a critical driver of early ecosystem succession, but in the High Arctic its role has remained uncertain.
Steven K. Schmidt, Jannetta N. Robinson, Adam J. Solon, James A. Bradley, Anastasia S. Hambi, Rachel R. Rubin, Charles Oliver, Ben W. Johnson, Mihai O. Cimpoiasu, Trevor P. Irons, Oliver Kuras, Anna Bergstrom, Pacifica Sommers   +12 more
wiley   +1 more source

Modern‐Type Eolian Regime and Global Cooling‐Modulated Dust Provenance in the Late Paleogene of Central‐East Asia

Geochemistry, Geophysics, Geosystems
Atmospheric mineral dust is a poorly constrained yet extremely important component of the climate system. Provenance studies from geologic dust archives are crucial to understand the drivers of the dust cycle over long time scales.
K. Bohm, J. Wasiljeff, T. Stevens, J. Salminen, H. Tang, Y. Lahaye, M. Kurhila, Z. Zhang, O. Haugvaldstad, A. Kaakinen   +9 more
doaj   +1 more source

Rock magnetism of quartz and feldspars chemically separated from pelagic red clay: a new approach to provenance study

Earth, Planets and Space, 2018
Magnetic mineral inclusions in silicates are widespread in sediments as well as in igneous rocks. Because they are isolated from surrounding environment, they have potential to preserve original magnetic signature even in chemically altered sediments ...
Yoichi Usui, Takaya Shimono, Toshitsugu Yamazaki   +2 more
doaj   +1 more source

Repeated Pleistocene Permafrost Episodes in the Western Pannonian Basin

Permafrost and Periglacial Processes, EarlyView.
ABSTRACT Concerning the study of past periglacial processes, the Pannonian Basin is a key area as it contains the southernmost frost polygons found in Central Europe. The presence or absence of permafrost is still, however, a matter of debate, and data on the timing of frost action are also scarce.
Krisztina Sebe, Ágnes Novothny, Gergely Surányi, Barbara Varga, László Fodor, Gábor Csillag   +5 more
wiley   +1 more source