Article
Geosciences, Multidisciplinary
Lisa R. Welp, Elizabeth J. Olson, Adriana Larrea Valdivia, Juan Reyes Larico, Efrain Palma Arhuire, Lino Morales Paredes, Jonathan T. DeGraw, Greg M. Michalski
Summary: This study analyzed the stable isotopes of precipitation in the city of Arequipa, Peru, and found that the isotopic composition of rainfall is influenced by atmospheric circulation patterns, providing new insights into moisture source influence in the Western Cordillera.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Environmental Sciences
Jie Li, Zhonghe Pang, Lijun Tian, Hongyi Zhao, Guoying Bai
Summary: This study investigates the short-term isotopic variations and controlling factors in a monsoon climate region using stable isotopes of precipitation samples from seven hydrometeorological stations in Beijing. The study finds that the increase in δO-18 values from northwest to south is controlled by the monsoon from the south and continental moisture from the northwest. The study also reveals the significant impact of the monsoon on δO-18 values and deuterium excess during May to September, and identifies the moisture source and residual vapor fraction as the most important factors in controlling δO-18 patterns in precipitation in a monsoon region.
Article
Geosciences, Multidisciplinary
Sarah M. McGrath, Steven C. Clemens, Yongsong Huang, Masanobu Yamamoto
Summary: The orbital-scale monsoon variability in India is not a direct response to northern hemisphere summer insolation, but rather reflects changes in moisture source and transport paths associated with changes in greenhouse gases and ice volume. The responses of Indian and East Asian monsoon systems at orbital scale are uncoupled and are driven by different forcings.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Meteorology & Atmospheric Sciences
Cong Xie, Liangju Zhao, Christopher J. Eastoe, Xiaohong Liu, Ninglian Wang, Zihan Zhang, Xiying Dong, Hang Liu
Summary: Seasonal and interannual variations in stable isotopes of precipitation in Xi'an, Northwest China, exhibit a consistent annual cycle, with maximum values occurring in the pre-monsoon season and minimum values in the late monsoon to post-monsoon seasons. Maps of water sources and wind fields, combined with isotope data and monsoon intensity indices, suggest that moisture sources during the monsoon come from the Bay of Bengal or recycled from land surfaces, while during the pre-monsoon they come from westerly circulation passing north of the Tibetan Plateau, and during the post-monsoon, they come from recycled monsoon moisture influenced by the South Asian Summer Monsoon.
ATMOSPHERIC RESEARCH
(2022)
Article
Engineering, Civil
Huawu Wu, Hongxiang Fan, Ruiyu Lei, Chijun Sun, Shengjie Wang, Haohao Wu, Congsheng Fu
Summary: This study collected daily precipitation isotopes in the Yangtze River Basin to investigate the controls on precipitation isotopic variability in the East Asian monsoon region. The results showed that convective behaviors and moisture sources play important roles in determining precipitation stable isotopes. The study highlighted the significant contribution of water vapor from the Indian Ocean and the Bay of Bengal to the variability of precipitation isotopes.
JOURNAL OF HYDROLOGY
(2023)
Article
Meteorology & Atmospheric Sciences
Alan D. Griffiths, Pauline C. Treble, Pandora Hope, Irina Rudeva
Summary: This study investigates the factors driving variability in rainfall stable water isotopes in coastal southwestern Western Australia. It finds that rainfall intensity is the most important factor for determining δO-18 on all time scales, while humidity plays a role in explaining daily variability of d. Additionally, the study finds that changes in rainfall intensity can explain a portion of the long-term variability in rainfall δO-18.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2022)
Article
Chemistry, Multidisciplinary
Tatyana Papina, Alla Eirikh, Tatiana Noskova
Summary: Stable water isotopes in the snowpack are commonly used to study hydrological processes in snow-covered regions. This study investigates the main factors influencing changes in the stable water isotope composition of the seasonal snow cover in South Western Siberia. The researchers conducted experiments and analyzed data from two cold seasons (2019-2021) using laser spectroscopy to determine the water isotope composition. The results show that changes in the isotopic composition of the snow cover layers are primarily related to the temperature gradient between the layers and the penetration of soil moisture.
APPLIED SCIENCES-BASEL
(2022)
Article
Meteorology & Atmospheric Sciences
Harsh Oza, Virendra Padhya, Akash Ganguly, R. D. Deshpande
Summary: This study provides a detailed understanding of the hydrometeorology in the Western Himalayas, highlighting the processes involved in precipitation. It reveals important features such as raindrop re-evaporation and the contribution of different moisture sources.
ATMOSPHERIC RESEARCH
(2022)
Article
Meteorology & Atmospheric Sciences
Stefano Natali, Marco Doveri, Linda Franceschi, Roberto Giannecchini, Marco Luppichini, Matia Menichini, Giovanni Zanchetta
Summary: The Mediterranean basin is heavily affected by climate change, especially small islands which face increased water scarcity and stress due to drought events. Stable isotopes in precipitation are used to study hydrological processes, and in the Mediterranean region, temperature, precipitation amount, and moisture origin contribute to isotopic variability.
ATMOSPHERIC RESEARCH
(2023)
Article
Engineering, Civil
Stefano Natali, Ilaria Baneschi, Marco Doveri, Roberto Giannecchini, Enricomaria Selmo, Giovanni Zanchetta
Summary: By analyzing oxygen and hydrogen stable isotope data collected from multiple sites, the study explores the factors influencing the isotopic characteristics of precipitation in the Tuscany region, finding that isotopic variability in rainfall is closely related to meteorological and geographical variables, with moisture sources from the Atlantic and Mediterranean contributing differently in various seasons.
JOURNAL OF HYDROLOGY
(2021)
Article
Meteorology & Atmospheric Sciences
Can Cao, Zhiwei Wu
Summary: Recent studies have classified La Nina events into mega La Nina and equatorial La Nina. However, the understanding of the variations in boreal summer intraseasonal oscillation (BSISO) behaviors between these two conditions remains uncertain. This study found that during equatorial La Nina summers, the weak intraseasonal outgoing longwave radiation anomalies over the western North Pacific (WNP) are observed at a lag of 3 pentads from the peak phase for the Maritime Continent (MC) BSISO events, which is different from the observations during mega conditions. The different propagation features under these two conditions can be partly explained by the background column-integrated moisture anomalies.
Article
Meteorology & Atmospheric Sciences
Chao-An Chen, Huang-Hsiung Hsu, Hsin-Chien Liang
Summary: This study evaluates the performance of CMIP6 models in simulating the seasonal evolution and extreme precipitation indices in the WNP-EA region, finding improvements in seasonal evolution but limited improvement in extreme indices during spring and fall.
WEATHER AND CLIMATE EXTREMES
(2021)
Article
Engineering, Civil
Meng Xing, Zheng Wang, Jibao Dong
Summary: Atmospheric precipitation plays an important role in the formation and accumulation of geological archives. Precipitation isotopes are widely used as a proxy to reconstruct paleoclimate and paleoenvironmental changes. However, the temperature effect is not applicable to all regions and time scales, especially in regions with complex moisture sources. This study conducted high-resolution water vapor isotopic measurements in Xi'an and found a significant temperature effect in the non-monsoon seasons.
JOURNAL OF HYDROLOGY
(2023)
Article
Geochemistry & Geophysics
Jessica L. L. Oster, Elli R. R. Ronay, Warren D. D. Sharp, Sebastian F. M. Breitenbach, David J. J. Furbish
Summary: Stalagem (U-234/U-238) can reflect past changes in rainfall, but this has only been studied in limited rainfall regimes. Model analysis suggests that changes in stalagmite (U-234/U-238) may come from flow path changes and dissolution of fresh hostrocks. Previous studies also find a correlation between stalagmite (U-234/U-238) and insolation on precessional timescales.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2023)
Article
Geography, Physical
Yuanyuan Li, Xiaodong Liu, Xiaoxun Xie, Alexandre Cauquoin, Martin Werner
Summary: The understanding of the relationship between the variation of precipitation stable oxygen isotope ratio (618Op) and monsoon activity in the Asian monsoon region is crucial for an in-depth comprehension of the regional hydrological cycle processes and for reconstructing the history of Asian paleomonsoon changes. Statistical analyses demonstrate that the East Asian 618Op is negatively correlated with the Indian summer monsoon (IM) intensity while the Indian 618Op is positively correlated with the western North Pacific summer monsoon (WNPM) intensity. The underlying mechanisms linking the monsoon and 618Op vary in different regions.
GLOBAL AND PLANETARY CHANGE
(2023)
Article
Green & Sustainable Science & Technology
Jiangwei Li, Lanping Zhang, Yufang Li, Keshao Liu, Yongqin Liu, Sijun Huang, Furun Li, Chen-Tung A. Chen, Yao Zhang, Anyi Hu
Summary: In this study, the bacterial communities, abundance and diversity of antibiotic resistance genes (ARGs) in a shallow-sea hydrothermal vent ecosystem were investigated using 16S rRNA gene amplicon sequencing and high-throughput quantitative PCR (HT-qPCR). The results showed that temperature was the significant factor shaping the bacterial communities, and the shallow-sea system had the lowest diversity and abundance of ARGs compared to other environments. Furthermore, the composition of bacterial communities and local environmental factors played an important role in shaping the distribution of the ARG profiles.
Article
Green & Sustainable Science & Technology
Kang Mei, Deli Wang, Yan Jiang, Mengqiu Shi, Chen-Tung Arthur Chen, Yao Zhang, Kai Tang
Summary: Hydrothermal vents are important sources of elements in the ocean, but the fluxes of these elements can be influenced by coastal processes and hydrothermal plumes. By analyzing water samples from two shallow-water hydrothermal vents, we found significant differences in the concentrations of dissolved metals between the vents. We estimated the plume fluxes of these dissolved metals and found that they may impact nearby seawater and ecosystems.
Article
Green & Sustainable Science & Technology
Zhigang Zeng, Xiaohui Li, Shuai Chen, Yuxiang Zhang, Zuxing Chen, Chen-Tung Arthur Chen
Summary: Studies on the isotopic compositions of iron (Fe), copper (Cu), and zinc (Zn) in seafloor andesites provide valuable insights into the fractionation of metal stable isotopes during magma evolution. This study investigates the Fe, Cu, and Zn isotopic compositions of andesites from the Kueishantao hydrothermal field (KHF) in the western Pacific. The results suggest that the Fe in the KHF andesites is derived from a mantle source similar to mid-ocean ridge basalts (MORBs). The isotopic compositions of Fe, Cu, and Zn in the KHF andesites, which differ significantly from MORBs and continental crust (CC), are likely influenced by the entrainment of sedimentary carbonate-derived components into the andesitic magma. The study also indicates that the Fe and Zn isotopes in back-arc and island-arc volcanic rocks may be influenced by CC and plate subduction components.
Article
Environmental Sciences
Li-Qing Jiang, Denis Pierrot, Rik Wanninkhof, Richard A. Feely, Bronte Tilbrook, Simone Alin, Leticia Barbero, Robert H. Byrne, Brendan R. Carter, Andrew G. Dickson, Jean-Pierre Gattuso, Dana Greeley, Mario Hoppema, Matthew P. Humphreys, Johannes Karstensen, Nico Lange, Siv K. Lauvset, Ernie R. Lewis, Are Olsen, Fiz F. Perez, Christopher Sabine, Jonathan D. Sharp, Toste Tanhua, Thomas W. Trull, Anton Velo, Andrew J. Allegra, Paul Barker, Eugene Burger, Wei-Jun Cai, Chen-Tung A. Chen, Jessica Cross, Hernan Garcia, Jose Martin Hernandez-Ayon, Xinping Hu, Alex Kozyr, Chris Langdon, Kitack Lee, Joe Salisbury, Zhaohui Aleck Wang, Liang Xue
Summary: Effective data management is crucial for oceanographic research, and this article introduces new and updated best practice data standards for discrete chemical oceanographic observations. These standards cover column header abbreviations, quality control flags, missing value indicators, and standardized calculation of certain properties. The aim is to improve current practices, promote international usage, and facilitate data sharing and permanent archiving for better research in ocean biogeochemistry.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Engineering, Marine
Zhigang Zeng, Xiaoyuan Wang, Xuebo Yin, Shuai Chen, Haiyan Qi, Chen-Tung Arthur Chen
Summary: The isotopic compositions and concentrations of various substances in vent fluids were analyzed to understand the water-rock interaction and origin of the fluids in hydrothermal systems. The results showed that the fluids primarily derived from seawater, while calcium and chlorine remained in the deep reaction zone during the fluid-andesitic rock interaction.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Biochemistry & Molecular Biology
Shuzhen You, Pei Sun Loh, Chen-Tung Arthur Chen, Gusti Z. Anshari, Jough-Tai Wang, Jiann-Yuh Lou, Shu-Lun Wang, Bing-Jye Wang, Hong-Young Chen
Summary: This study analyzed the phosphorus species in surface sediments along the mainstream of the Kapuas River in Indonesia, and found that the composition and distribution of phosphorus species in the sediments showed dynamic changes, indicating the presence of a localized phosphorus cycle along the river.
CHEMISTRY AND ECOLOGY
(2022)
Article
Environmental Sciences
Chen-Tung Arthur Chen, Ting-Hsuan Huang, Wei-Jen Huang, Yiing-Jang Yang, Sen Jan, Ming-An Lee, Ming-Ta Lee
Summary: The Fukushima accident released both short-lived Cs-134 and longer-lived Cs-137 into the ocean. The amount of cesium released, although significant, is much less than that produced during atomic bomb tests 60 years ago. However, the latter has received little attention. Analysis shows that Cs-137 is present in waters near the origin of the Kuroshio current, with its activity increasing with depth to reach a subsurface maximum. The Kuroshio current transports a large amount of Cs-137 northward each year, far exceeding the amount discharged to the ocean at Fukushima during 2016-2018.
MARINE POLLUTION BULLETIN
(2022)
Article
Microbiology
Xiaofeng Chen, Kai Tang, Mu Zhang, Shujing Liu, Mingming Chen, Peiwen Zhan, Wei Fan, Chen-Tung Arthur Chen, Yao Zhang
Summary: By studying the genome and protein expression of microorganisms in the shallow-sea hydrothermal vent fluids off Kueishantao Island, researchers have revealed the genetic potentials and protein expressions of microbial communities in this system, as well as their connections with deep-sea and terrestrial geothermal systems.
Article
Environmental Sciences
Chen-Tung (Arthur) Chen, Shujie Yu, Ting-Hsuan Huang, Yan Bai, Xianqiang He, Hon-Kit Lui
Summary: Rapid changes in sea surface temperature (SST) were observed in the subpolar Bering and Okhotsk Seas in the northernmost Pacific Ocean from 1998 to 2018. The SST increased by 0.62 and 0.41 degrees C/decade, respectively, much higher than the global rate. The chlorophyll content remained stable in the Bering Sea but increased in the Okhotsk Sea. The Secchi disk depth (SDD) also increased in both seas. Similarly, the SST in the subtropical/tropical South China Sea (SCS) began rising, albeit at a slower rate than the global average. The chlorophyll content increased initially, but then decreased between 2007 and 2018. The SDD increased over the observed period. Overall, phytoplankton responded differently to the warming seawater in these three seas.
Article
Green & Sustainable Science & Technology
Chen-Tung (Arthur) Chen, Sen Jan, Meng-Hsien Chen, Li-Lian Liu, Jung-Fu Huang, Yiing-Jang Yang
Summary: The reliable supply of electricity while minimizing environmental impacts is crucial for the sustainable development of society. A nuclear power plant in Nanwan Bay, Taiwan has been operating since 1984. The discharge of cooling water into the bay, which is in Kenting National Park known for its coral reefs and marine life, causes thermal pollution. However, the bay's deep and unique characteristics, including internal waves and upwelling, help reduce the temperature and prevent heat stress on marine life. Typhoons and currents further enhance the cooling effect. Despite the presence of a nearby nuclear power plant, the bay's surface waters remain cooler than the surrounding waters.
Article
Environmental Sciences
Jay Lee, James T. Liu, Yu-Shih Lin, Chen-Tung Arthur Chen, Bo-Shian Wang
Summary: This study conducted observations to understand the relations between physical forcing and biogeochemical properties of suspended particles in the river-dominated northern South China Sea shelf. The results showed that monsoon winds drove cold upwelling and river waters at the surface, while a bottom nepheloid layer consisting of small particles was observed. The study also found that the biocommunities in these two regimes were influenced by far-field storm winds, tidal modulation, and mixing processes.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Jung-Fu Huang, Chen-Tung Arthur Chen, Meng-Hsien Chen, Shih-Lun Huang, Pi-Yu Hsu
Summary: Understanding the relationship between environmental factors and marine biota is crucial for the sustainability of the marine environment. Human activities have been identified as significant contributors to changes in marine ecology, but these changes often interact with less apparent natural influences. This research focused on studying the relationships and degree of changes between environmental factors and marine life in Nanwan Bay, Kenting, Taiwan. Factor analysis and a structural equation model were employed to analyze the impacts of various variables on marine organisms. The findings emphasized the significant influence of primary productivity and nutrient levels on marine life assemblage, providing insights into the impact of natural and anthropogenic factors on marine ecosystems.
Editorial Material
Multidisciplinary Sciences
Yiwen Pan, Yifan Li, Chen-Tung Arthur Chen, Zong-Pei Jiang, Wei -Jun Cai, Yunwen Shen, Zesheng Ding, Qixian Chen, Yanan Di, Wei Fan, Chenba Zhu, Nianzhi Jiao, Ying Chen
Article
Limnology
Pei Sun Loh, Aimin Jin, Zhanghua Lou, Xuegang Chen, Shuangyan He, Chen-Tung Arthur Chen, Stephanie Parker, Jianxiong Hu, Hongwei Yuan, Longxiu Cheng
Summary: This study investigated the accumulation rates of sedimentary total organic carbon (TOC), total nitrogen (TN), and total phosphorus (TP) in the Andong salt marsh, Hangzhou Bay. The results showed that the accumulation rates varied over time, with increases in the 1980s to 1990s indicating the marsh acted as carbon and nutrient sinks, followed by a decrease in rates from 2000 to 2015 likely due to reduced sediment inputs and intensified sea level rise.
JOURNAL OF OCEANOLOGY AND LIMNOLOGY
(2023)
Article
Environmental Sciences
Qianqian Liu, Selvaraj Kandasamy, Weidong Zhai, Huawei Wang, Yoganandan Veeran, Aiguo Gao, Chen-Tung Arthur Chen
Summary: This study conducted field investigations at the deep chlorophyll maxima of the southern Yellow Sea and found that the stable carbon isotopic composition of marine particulate organic matter (δC-13(POM)) is more strongly correlated with temperature than dissolved carbon dioxide (CO2) concentration.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
Article
Geochemistry & Geophysics
Lingyu Zhang, Kristoffer Szilas
Summary: This study presents new petrological and geochemical data for the Narssaq Ultramafic Body (NUB) in the Itsaq Gneiss Complex of SW Greenland. The results indicate that the ultramafic rocks of NUB are not mantle residues, but instead represent crustal cumulates derived from high-Mg magmas.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
Rong Xu, Sarah Lambart, Oliver Nebel, Ming Li, Zhongjie Bai, Junbo Zhang, Ganglan Zhang, Jianfeng Gao, Hong Zhong, Yongsheng Liu
Summary: This study investigated the iron isotope compositions of Cenozoic basalts in Southeast China, finding significant variations related to different types of basalts and their respective sources.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
C. J. Ebinger, Miriam C. Reiss, Ian Bastow, Mary M. Karanja
Summary: The East African rift system is formed above mantle upwellings and the formation of rifts is related to lithospheric thinning and magmatic activity. The amount of splitting varies spatially and the fast axes are predominantly parallel to the orientation of the rifts. Thick lithospheric modules have less splitting and different orientations, which may indicate mantle plume flow. Splitting rotates and increases in strength as it enters the rift zones, suggesting that the anisotropy is mainly present at shallow depths.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Correction
Geochemistry & Geophysics
Ekaterina Rojas-Kolomiets, Owen Jensen, Michael Bizimis, Gene Yogodzinski, Lukas Ackerman
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
Robert W. Nicklas, Igor S. Puchtel, Ethan F. Baxter
Summary: Oxygen fugacity is a fundamental parameter for understanding redox processes in igneous systems. This study compares the Fe-XANES oxybarometry method with the V-in-olivine method for evaluating fO(2) in MORB lavas. The results show that the V-in-olivine method is not applicable to samples with low MgO content, and that the majority of Archean komatiite sources have lower fO(2) than modern MORB.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
Chunfei Chen, Stephen F. Foley, Sebastian Tappe, Huange Ren, Lanping Feng, Yongsheng Liu
Summary: The volatile components CO2 and H2O play a major role in mantle melting and heterogeneity. In this study, Ca isotopes were used to trace the lithological heterogeneity in alkaline magmatic rocks. The results revealed the presence of K-richterite and carbonate components as the source of alkaline magmas with low delta 44/40Ca values. These findings highlight the importance of Ca isotopes as a robust tracer of lithological variation caused by volatiles in the Earth's upper mantle.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
Timothee Jautzy, Gilles Rixhon, Regis Braucher, Romain Delunel, Pierre G. Valla, Laurent Schmitt, Aster Team
Summary: Although the current approach to estimate catchment-wide denudation rates using only 10Be concentrations has made significant progress in geomorphology, this study argues for the inclusion of 26Al measurements and testing of steady-state assumptions in slow eroding, formerly glaciated landscapes. The study conducted measurements of both 10Be and 26Al in stream sediments from the Vosges Massif in France and found that elevation, slope, channel steepness, and precipitation were the primary factors controlling denudation rates. The study also revealed a significant relationship between the extent of past glaciation and the cosmogenic (un-)steadiness in the stream sediments.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
Erik van der Wiel, Douwe J. J. van Hinsbergen, Cedric Thieulot, Wim Spakman
Summary: Numerical models of Earth's mantle dynamics can predict the vigour and mixing of mantle flow, and the average slab sinking rates are an unexplored parameter that can provide intrinsic information on these characteristics. Through numerical experiments, it has been found that slab sinking rates are strongly correlated with mantle convection and mixing, and may explain geochemical observations from hotspot volcanoes.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)