Article
Engineering, Environmental
Xue Zhang, Zi-Feng Zhang, Xianming Zhang, Fu-Jie Zhu, Yi-Fan Li, Minghong Cai, Roland Kallenborn
Summary: This study analyzed the concentrations of polycyclic aromatic hydrocarbons (PAHs) along a cross-section from China to Antarctica, revealing their spatial distribution, source contributions, and gas-particle partitioning in the Pacific, Indian, and Southern Oceans. The results showed that the sources and temperature of air masses significantly influenced the distribution of PAHs, with coal combustion emissions being the major source.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Songhe Yu, Zhaoyun Zong, Xingyao Yin
Summary: The study proposes a rock physical model that considers the influence of organic matter content and mineral composition on mud-rich source rocks, providing a theoretical basis for seismic inversion and forward modeling. A four-parameter regression method is used to estimate continuous total organic carbon values and analyze the impact of different parameters on the elastic properties of rocks.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geochemistry & Geophysics
Jessica R. Stanley, Jean Braun, Guillaume Baby, Francois Guillocheau, Cecile Robin, Rebecca M. Flowers, Roderick Brown, Mark Wildman, Romain Beucher
Summary: This study uses a landscape evolution model and a large dataset to investigate the topographic uplift process of the southern African Plateau. The results suggest that the major topographic uplift occurred during the mid-Cretaceous and mid-Cenozoic periods.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Environmental Sciences
Mi Hae Jeon, Jinyoung Jung, Mi Ok Park, Kyoung-Ho Cho, Youngju Lee, Eun Jin Yang, Sung-Ho Kang
Summary: This study investigates the impacts of environmental changes on dissolved organic matter (DOM) characteristics in the rapidly changing Arctic Ocean. By analyzing seawater samples collected in 2019, the study identifies high intensities of humic-like and tryptophan-like FDOM in specific layers, with the former originating from shelf sediment and the latter potentially from river discharge. The study suggests that future increase in river discharge may further impact DOM dynamics in the western Arctic Ocean.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Cara Nissen, Nicolas Gruber, Matthias Muennich, Meike Vogt
Summary: The study used a high-resolution model to analyze the important role of silicifying diatoms and calcifying coccolithophores in controlling nutrient levels and stoichiometry in the Southern Ocean. Results demonstrate that the efficient consumption and export of Si(OH)4 by diatoms, as well as the export of organic matter by coccolithophores, contribute to the control of biogeochemical processes in the Southern Ocean.
GLOBAL BIOGEOCHEMICAL CYCLES
(2021)
Article
Multidisciplinary Sciences
Zuozhu Wen, Thomas J. Browning, Yihua Cai, Rongbo Dai, Ruifeng Zhang, Chuanjun Du, Ruotong Jiang, Wenfang Lin, Xin Liu, Zhimian Cao, Haizheng Hong, Minhan Dai, Dalin Shi
Summary: Nitrogen fixation is vital for ocean productivity, but the exact mechanisms controlling this process are still unclear. This study shows that the supply ratio of iron:nitrogen is the most important factor in regulating N-2 fixation distribution in the tropical ocean.
Article
Meteorology & Atmospheric Sciences
Arielle Stela N. Imbol Nkwinkwa, Mathieu Rouault, Noel Keenlyside, Shunya Koseki
Summary: The study utilized simulations to demonstrate the seasonal impact of the warm core of the Agulhas Current on precipitation in southern Africa. It was found that reducing the temperature of the current led to a decrease in precipitation during the wettest seasons, with a mechanism related to pressure adjustment.
JOURNAL OF CLIMATE
(2021)
Article
Geosciences, Multidisciplinary
Yong Zhou, Xiaofei Chen, Sidao Ni, Yunyi Qian, Yayun Zhang, Chuanhai Yu, Qiu Zhong, Tingting Zheng, Min Xu
Summary: By analyzing seismic T waves, this study revealed the crustal attenuation structure in stable continents, with identified Qp and Qs values in southern Africa showing distinct features at high frequencies. This method could be extended to infer crustal attenuation in other continents near the coast.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Environmental Sciences
I. F. Pendea, N. Kanavillil, S. Kurissery, G. L. Chmura
Summary: We examined soil properties and accumulation rates in wetlands in southern Canada and found significant differences between different types of wetlands. The high organic carbon accumulation rates in these wetlands make them important natural solutions for mitigating greenhouse gas emissions.
JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
(2023)
Article
Oceanography
Rishav Goyal, Matthew H. England, Martin Jucker, Alex Sen Gupta
Summary: This study highlights the significant impact of zonally asymmetric atmospheric changes on future ocean warming and circulation changes in subtropical western boundary current regions, explaining a substantial portion of sea surface temperature warming in the Tasman Sea, southern Australia, and the Agulhas Current region. The warming trends in the Indian and Pacific basins are primarily driven by the advection of warm tropical water towards the mid-latitudes due to changes in large-scale subtropical ocean gyres, influenced by changes in mid-latitude surface wind stress patterns.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Geochemistry & Geophysics
Kazutaka Yasukawa, Satoshi Kino, Junichiro Ohta, Keishiro Azami, Erika Tanaka, Kazuhide Mimura, Koichiro Fujinaga, Kentaro Nakamura, Yasuhiro Kato
Summary: The research reveals that deep-sea sediments in the western North Pacific Ocean are significantly enriched in rare-earth elements and yttrium, originating from variations in micronodules characteristics and abundant supply of organic matter. The study also suggests that changes in bottom water current intensities and increased fish productivity are essential factors affecting the formation of REY-rich mud.
Article
Meteorology & Atmospheric Sciences
Andrew Hoell, Tamuka Magadzire, Amy McNally, Jon Eischeid
Summary: Characteristics and physical features associated with long-term drought in Southern Africa have been diagnosed using observed data and climate model simulations. The study found that while drought occurs periodically in each region, it rarely occurs simultaneously. The persistence of October-April precipitation is a common feature, as well as the likelihood of consecutive dry periods.
INTERNATIONAL JOURNAL OF CLIMATOLOGY
(2023)
Article
Environmental Sciences
Yan Lin, Minggang Cai, Min Chen, Peng Huang, Ruibo Lei, Meng Chen, Dawei Gui, Hongwei Ke
Summary: Polycyclic aromatic hydrocarbons (PAHs) in the Arctic Ocean primarily enter through local sources (such as river input and ice melting) rather than long-range transport, as revealed by this study. The study highlights the importance of Eurasian local inputs in supplying PAHs to the Arctic Ocean.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
Alexander Vereshchaka, Eteri Musaeva, Anastasiia Lunina
Summary: The spatial distribution of zooplankton communities is influenced by various factors, with depth being the major driver. Hydrological factors and chlorophyll concentration significantly impact the quantitative structure, while the diel cycle has minimal effect. Comparisons with previous reports indicate no significant changes in mesoplankton distribution between 1992 and 2009.
Article
Geology
Howard V. Head, Emese M. Bordy
Summary: Interdune deposits in the ancient desert system of southern Africa provide insights into the dynamics of desert environments over time. This study focuses on the Clarens Formation and identifies different facies associations, indicating variations in sediment availability and climate. The findings reveal the presence of meso-scale and macro-scale lakes within the dune system, with different mechanisms of flooding and sediment deposition.
Article
Geochemistry & Geophysics
Janne Repschlaeger, Mara Weinelt, Nils Andersen, Dieter Garbe-Schoenberg, Ralph Schneider
EARTH AND PLANETARY SCIENCE LETTERS
(2015)
Article
Geosciences, Multidisciplinary
Dirk Nuernberg, Tebke Boeschen, Kristin Doering, Elfi Mollier-Vogel, Jacek Raddatz, Ralph Schneider
Article
Geography, Physical
S. Fleury, P. Martinez, X. Crosta, K. Charlier, I. Billy, V. Hanquiez, T. Blanz, R. R. Schneider
QUATERNARY SCIENCE REVIEWS
(2015)
Article
Geochemistry & Geophysics
A. Filippova, M. Kienast, M. Frank, R. R. Schneider
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2016)
Article
Geosciences, Multidisciplinary
Enno Schefuss, Timothy I. Eglinton, Charlotte L. Spencer-Jones, Juergen Rullkoetter, Ricardo De Pol-Holz, Helen M. Talbot, Pieter M. Grootes, Ralph R. Schneider
Article
Geography, Physical
Matthias Moros, Jeremy M. Lloyd, Kerstin Perner, Diana Krawczyk, Thomas Blanz, Anne de Vernal, Marie-Michele Ouellet-Bernier, Antoon Kuijpers, Anne E. Jennings, Andrzej Witkowski, Ralph Schneider, Eystein Jansen
QUATERNARY SCIENCE REVIEWS
(2016)
Article
Geography, Physical
Veronica Rohde Krossa, Matthias Moros, Thomas Blanz, Eystein Jansen, Ralph Schneider
Article
Geochemistry & Geophysics
V. C. Khon, Y. V. Wang, U. Krebs-Kanzow, J. O. Kaplan, R. R. Schneider, B. Schneider
EARTH AND PLANETARY SCIENCE LETTERS
(2014)
Article
Geochemistry & Geophysics
Rebecca S. Robinson, Johan Etourneau, Philippe M. Martinez, Ralph Schneider
EARTH AND PLANETARY SCIENCE LETTERS
(2014)
Article
Geochemistry & Geophysics
Guillaume Leduc, Dieter Garbe-Schoenberg, Marcus Regenberg, Camille Contoux
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2014)
Article
Geosciences, Multidisciplinary
Florian Scholz, James McManus, Alan C. Mix, Christian Hensen, Ralph R. Schneider
Article
Geography, Physical
Elfi Mollier-Vogel, Guillaume Leduc, Tebke Boeschen, Philippe Martinez, Ralph R. Schneider
QUATERNARY SCIENCE REVIEWS
(2013)
Article
Geosciences, Multidisciplinary
Janne Repschlaeger, Dieter Garbe-Schoenberg, Mara Weinelt, Ralph Schneider
CLIMATE OF THE PAST
(2017)
Article
Ecology
J. Etourneau, R. S. Robinson, P. Martinez, R. Schneider
Article
Geosciences, Multidisciplinary
S. Weldeab, J-B W. Stuut, R. R. Schneider, W. Siebel
CLIMATE OF THE PAST
(2013)