Article
Geosciences, Multidisciplinary
Thi Kim Oanh Ta, Van Lap Nguyen, Yoshiki Saito, Marcello Gugliotta, Toru Tamura, Thi Mong Lan Nguyen, Minh Hoang Truong, Thi Luan Bui
Summary: The study provides a comprehensive analysis of the sedimentary response of the Mekong River delta to sea-level changes over the last 6000 years. It reveals that the delta deposits have undergone continuous aggradation and progradation since around 13 thousand years ago.
Article
Geography, Physical
Fengling Yu, Nannan Li, Ganghua Tian, Zhaoquan Huang, Haixian Xiong, Tanghua Li, Shengtao Liu, Yuze Liu
Summary: This study establishes a database of Holocene relative sea-level observations for the Fujian coast in southeastern China. The findings show that the sea-level for this region did not exceed present levels during the Holocene, except potentially during specific time periods. The study also identifies discrepancies between the sea-level reconstructions and existing models, highlighting the need for further research to better understand the factors contributing to these differences and assess the ongoing sea-level rise.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Hyun Ho Yoon, Jin-Young Lee, Jin Cheul Kim, Chang-Pyo Jun, Han -Woo Choi
Summary: Incised-valley infill deposits are closely related to sea level changes during the post-glacial period. In this study, sediment cores from Yeongil Bay, Korea, were analyzed to examine the depositional patterns of incised valley fill since the last glacial maximum. The study revealed retrogradation of fluvial and estuary systems and progradation of delta systems. The importance of accommodation capacity for delta initiation was emphasized.
Article
Geography, Physical
Feng Jiang, Yanna Wang, Xiaoshuang Zhao, Yan Liu, Jing Chen, Qianli Sun, Maotian Li, Brian Finlayson, Zhongyuan Chen
Summary: By studying the sediment core retrieved from the Yangtze River mouth, a Holocene sedimentary-ecological complex was reconstructed, showing three infilling phases with different sedimentation rates. The early Holocene saw rapid infilling with coastal sediments, while the middle-late Holocene had relatively lower rates. Microfossil spectra revealed distinct biological stages and their ecological implications.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geosciences, Multidisciplinary
Senay Horozal, Sujin Chae, Jeong Min Seo, Sang Min Lee, Hyuk Soo Han, Deniz Cukur, Eok Dong Kim, Ji Hyun Son
Summary: High-resolution seismic reflection profiles covering 1000 km were used to study the morphology, distribution, nature, and sequence stratigraphy of incised valleys and valley fills within the Quaternary period.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geography, Physical
Stephen Chua, Adam D. Switzer, Tanghua Li, Huixian Chen, Margaret Christie, Timothy A. Shaw, Nicole S. Khan, Michael Bird, Benjamin P. Horton
Summary: This study extended the Holocene relative sea-level (RSL) data from Singapore and found a rapid rise followed by a deceleration in the early Holocene, leading to a highstand in the mid-Holocene before falling to present levels. Combining data from the Malay-Thai Peninsula revealed substantial misfits between regional RSL reconstructions and glacial isostatic adjustment (GIA) model predictions. The cause of these misfits, whether from regional processes or inaccurate model parameters, remains unknown.
Article
Geochemistry & Geophysics
Hyeonsu Shin, Yong Sik Ghim, Kyoungtae Ko, Sung-Ja Choi, Youngbeom Cheon
Summary: This research focuses on the Quaternary incised fills in the northern Yangsan Fault, investigating the tectonic impact on the development and sedimentation of incised valleys. The study reveals that the fills consist of fluvial sediments, debris flow deposits, and shallow marine deposits, with significant lateral changes in sediment thickness. The development of deep incised valleys is primarily attributed to fluvial downcutting on erodible basement, as well as the presence of fault and fracture networks.
MARINE GEOPHYSICAL RESEARCH
(2022)
Article
Geosciences, Multidisciplinary
Michael R. Twarog, Stephen J. Culver, David J. Mallinson, Eduardo Leorri, Bailey Donovan, Emily Harrison, Haley Hindes, Devon Reed, Eric Horsman, Noor Azhar Mohd Shazili, Peter R. Parham
Summary: This study uses a multi-proxy approach to characterize environmental changes and late Pleistocene to Holocene sequence stratigraphic architecture in 16 cores from the northern Sunda Shelf off the east coast of Peninsular Malaysia. Five chronostratigraphic units are recognized, revealing the geologic response of the shelf to sea-level rise and the sequence stratigraphic development of tropical, shallow shelf depositional sequences.
Article
Geography, Physical
Alar Rosentau, Volker Klemann, Ole Bennike, Holger Steffen, Jasmin Wehr, Milena Latinovic, Meike Bagge, Antti Ojala, Mikael Berglund, Gustaf Peterson Becher, Kristian Schoning, Anton Hansson, Lars Nielsen, Lars B. Clemmensen, Mikkel U. Hede, Aart Kroon, Morten Pejrup, Lasse Sander, Karl Stattegger, Klaus Schwarzer, Reinhard Lampe, Matthias Lampe, Szymon Uscinowicz, Albertas Bitinas, Ieva Grudzinska, Jueri Vassiljev, Triine Nirgi, Yuriy Kublitskiy, Dmitry Subetto
Summary: This study compiles and analyzes 1099 Holocene relative shore-level indicators around the Baltic Sea, with a focus on data points related to the last marine stage. Results show that regions with negative RSL tendencies dominate, while transitional regions exhibit shifts from positive to negative tendencies in the mid-Holocene. Comparisons with GIA predictions highlight the need for improvements in ice-sheet and Earth-structure models, demonstrating the potential benefits of this new compilation for future studies.
QUATERNARY SCIENCE REVIEWS
(2021)
Article
Geosciences, Multidisciplinary
Nguyen Minh Quang, Vu Van Ha, Nguyen Thi Min, Ngo Thi Dao, Nguyen Thi Thu Cuc, Dang Minh Tuan, Dang Xuan Tung, Tran Thi Man, Nguyen Thi Thao
Summary: The Holocene sediment facies in the incised valley of the Ma River Delta were analyzed using various methods, revealing the sea level change and the formation of the delta during the Holocene period.
VIETNAM JOURNAL OF EARTH SCIENCES
(2023)
Article
Geography, Physical
Fabrizio Marra, Marialetizia Buonfiglio, Laura Motta
Summary: By analyzing deep boreholes in the western sector of the Circus Maximus in Rome, we reconstruct the aggradational history of the Murcia Valley, a main tributary valley of the Tiber River. The findings suggest that during the Bronze Age, the valley experienced a lowering of the drainage network base level, creating a dry alluvial plain suitable for human settlement. Additionally, evidence of dramatic overflooding during the 6th century BCE indicates a shift in climatic trends. These previously unrecognized hydrological dynamics and paleoclimatic fluctuations provide insights into the paleolandscape and human interventions in the Murcia Valley.
QUATERNARY INTERNATIONAL
(2022)
Article
Geosciences, Multidisciplinary
Susumu Tanabe, Wan Hong, Junghun Park, Hiroyuki Kitagawa
Summary: Modern delta formation was a result of the slowing down of sea-level rise during the middle Holocene. In Asia, many deltas formed at the mouths of rivers with high sediment discharge at 8 ka, while even some deltas formed by rivers with small sediment discharge in the Japanese Islands at the same time. This study shows that the sediment discharge threshold for delta initiation in the area north of Tokyo Bay was a mean annual water discharge of 100 m3/s.
Article
Geography, Physical
Fangyi Tan, Nicole S. Khan, Tanghua Li, Aron J. Meltzner, Jedrzej Majewski, Nicholas Chan, Peter M. Chutcharavan, Niamh Cahill, Matteo Vacchi, Dongju Peng, Benjamin P. Horton
Summary: This study establishes a standardized database of Holocene relative sea-level (RSL) data from far-field islands in the mid-Pacific. The database can be used to validate the ice-melting histories of glacial isostatic adjustment (GIA) models. Lack of quality control in the RSL reconstruction hinders understanding of regional variability and ice-equivalent sea-level changes.
QUATERNARY SCIENCE REVIEWS
(2023)
Article
Environmental Sciences
Gang Li, Li Miao, Wen Yan
Summary: This study examines the evolution history and response of marine mud deposits on the north-western shelf of the South China Sea to various factors, such as river system, sea-level change, monsoon variations, and human activities. The results reveal differences in the evolution of mud deposits in shallow waters and on the middle shelf, as well as the influence of sediment fluxes, winter monsoons, and human activities on mud deposition.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Alessandro Amorosi, Luigi Bruno, Massimo Caldara, Bruno Campo, Simone Cau, Vincenzo De Santis, Andrea Di Martino, Wan Hong, Giorgio Lucci, Claudio Pellegrini, Veronica Rossi, Irene Sammartino, Stefano Claudio Vaiani
Summary: Through the analysis of onshore cores, we have gained a deeper understanding of the stratigraphic architecture and sedimentary response of late Quaternary paleovalley systems. These systems experienced erosion during the late Pleistocene, filling during the Holocene, and basinwide flooding. The sediment characteristics indicate a shift in sediment provenance from southern Apennine rocks to a mixed composition from northern sources, due to the influence of the Southeast-directed Western Adriatic Current.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geology
Marcello Gugliotta, Yoshiki Saito, Thi Kim Oanh Ta, Van Lap Nguyen, Andrew D. La Croix, Zhanghua Wang, Toru Tamura, Rei Nakashima, Kim Phuong Lieu
Summary: By analyzing a core dataset from the Ba Lai palaeochannel in the Mekong River Delta, this study identified and interpreted nine sedimentary facies, revealing the evolution history and sedimentation processes of the channel. The findings provide important information for better understanding tide-dominated deltaic systems and improving their interpretation in the geological record.
Article
Geosciences, Multidisciplinary
Christopher W. Kinsley, Louisa Bradtmiller, David McGee, Michael Galgay, Jan-Berend Stuut, Rik Tjallingii, Gisela Winckler, Peter B. DeMenocal
Summary: Reconstructions of aeolian dust flux to West African margin sediments can be used to explore changing atmospheric circulation and hydroclimate over North Africa on millennial to orbital timescales. The study found that there was a Green Sahara period during 60-50 ka when the dust flux was similar to levels during the early Holocene African Humid Period. Additionally, during the Last Glacial Maximum, dust deposition decreased and showed little response to low-latitude insolation changes.
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
(2022)
Article
Meteorology & Atmospheric Sciences
P. Harding, C. Martin-Puertas, J. Sjolte, A. A. Walsh, R. Tjallingii, C. Langdon, S. P. E. Blockley, A. Brauer, P. Langdon, A. M. Milner, R. Muscheler, M. Perez
Summary: Understanding the atmospheric response to radiative forcing and wind patterns is crucial for future implications. This study examines varved records from Diss Mere, England, during a Grand Solar Minima (GSM) and discusses the solar-wind linkage in the North Atlantic-European region. The research finds evidence for increased windiness during the GSM, synchronous with changes in C-14 production and atmospheric response.
Article
Geosciences, Multidisciplinary
Xuanqi Zhao, Weiguo Zhang, Feng Wang, Quang Lan Vu, Yoshiki Saito
Summary: In this study, the sediment provenance changes in the Red River Delta, Vietnam, during the Holocene were inferred through magnetic measurement, particle size analysis, diffuse reflectance spectroscopy (DRS), and geochemical analyses. The results showed that Holocene climate change and human activities have led to variations in sediment composition. The magnetic properties, together with DRS analysis, provided insights into paleoclimate and paleoenvironmental changes in deltaic environments.
Article
Geography, Physical
Bing Song, Zhen Li, Limi Mao, Yoshiki Saito, Xiangdong Yang, Shixiong Yang
Summary: This study presents vegetation succession and climate change during 9.2-8.0 cal kyr BP based on sub-decennial scale pollen data, revealing two cold and dry events at 8.5 ka and 8.2 ka.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Environmental Sciences
Ruihe Jin, Yue Li, Yoshiki Saito, Zhanghua Wang, Thi Kim Oanh Ta, Van Lap Nguyen, Jing Yang, Min Liu, Yan Wu
Summary: This study investigated the spatial distribution of 15 Amino accelerators and antioxidants (AAL/Os) and 5 AAO transformation products (AAOTPs) in sediments from the Dong Nai River System (DNRS) in Vietnam. The results showed higher levels of these compounds in downstream and primary tributary sediments, suggesting their cumulative sedimentation towards the estuarine region. The characteristics of the sediments, such as total organic carbon (TOC) content and grain sizes, were significantly correlated with the burdens of these compounds, indicating their preferential partitioning into fine and TOC-rich matter. This research provides valuable insights into the environmental behavior of AAL/Os and AAOTPs in Asian aquatic systems and highlights the need for further evaluation of their impacts on wildlife and public health.
ENVIRONMENTAL RESEARCH
(2023)
Article
Geography, Physical
Martin J. Head, Colin N. Waters, Jan A. Zalasiewicz, Anthony D. Barnosky, Simon D. Turner, Alejandro Cearreta, Reinhold Leinfelder, Francine M. G. McCarthy, Daniel de B. Richter, Neil L. Rose, Yoshiki Saito, Davor Vidas, Michael Wagreich, Yongming Han, Colin P. SumMerhayes, Mark Williams, Jens Zinke
JOURNAL OF QUATERNARY SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Jian Liu, Jiandong Qiu, Yoshiki Saito, Xin Zhang, Hong Wang, Feifei Wang, Lilei Chen, Gang Xu, Bin Chen, Meina Li, Yuhui An
Summary: This study provides new insights into the formation of the Holocene mud wedge along the Zhejiang-Fujian coast in East China Sea. The researchers conducted an integrated analysis of seismic profiles and borehole cores to understand the sedimentary evolution of the area since the Late Pleistocene. The study identified five major seismic units and various subunits, providing new understanding of the paleoenvironmental and paleogeographic evolution of the coastal area.
Article
Geosciences, Multidisciplinary
Celia Martin-Puertas, Armand Hernandez, Eulogio Pardo-Iguzquiza, Laura Boyall, Chris Brierley, Zhiyi Jiang, Rik Tjallingii, Simon P. E. Blockley, Francisco Javier Rodriguez-Tovar
Summary: According to a lake-sediment record and model simulations, meltwater discharge in the mid-Holocene North Atlantic disrupted decadal climate variability, suggesting that future melting on Greenland may hinder climate predictability in the region.
Article
Geochemistry & Geophysics
Hana Jurikova, Simon J. Ring, Michael J. Henehan, Ina Neugebauer, Birgit Schroeder, Daniela Mueller, Markus J. Schwab, Rik Tjallingii, Achim Brauer, Cecile Blanchet
Summary: The Dead Sea brines have a unique chemical composition and high boron isotope values, but little is known about their formation and driving processes. This study reconstructs past brine conditions using boron isotopes and related elements in lacustrine sediments, and finds that the brines of the late Holocene Dead Sea have higher boron isotope values compared to the glacial precursor Lake Lisan. Boron cycle modeling suggests that the enrichment of boron isotopes in post-glacial brines is due to a reduction in freshwater inflow, co-precipitation of boron in evaporitic deposits, and loss of boron in atmospheric water vapor.
EARTH AND PLANETARY SCIENCE LETTERS
(2023)
Article
Geography, Physical
Yuhui An, Xiuli Feng, Jian Liu, Yoshiki Saito, Jiandong Qiu, Xin Zhang, Hong Wang, Lilei Chen
Summary: The northern Jiangsu coastal zone (NJCZ) has developed multi-stage deltas and clinoforms due to the discharge of the Yellow and Yangtze rivers and the Huaihe River. An old clinoform, located below the old Yellow River delta (OYRD), has been studied to understand its evolution. The study used various analyses, including dating techniques, grain size measurements, isotopic analysis, and identification of sedimentary organisms.
Article
Geology
Yuanyuan Chen, Bing Deng, Yoshiki Saito, Zhanghua Wang, Xiaoqiang Yang, Jiaxue Wu
Summary: High-resolution seismic data were used to study the Holocene sedimentary evolution of the Pearl River delta-estuary-shelf system. A subaqueous clinoform developed in the Holocene over the pre-Holocene incised channel/valley network. The highstand sediment displayed asymmetric accumulation within 30 m water depths, with a thicker depocenter located in western Lingdingyang Bay.
Article
Geosciences, Multidisciplinary
Markus Czymzik, Rik Tjallingii, Birgit Plessen, Peter Feldens, Martin Theuerkauf, Matthias Moros, Markus J. Schwab, Carla K. M. Nantke, Silvia Pinkerneil, Achim Brauer, Helge W. Arz
Summary: Knowledge about Holocene environmental variability in the circum-Baltic region is crucial for understanding its responses to climate change. By analyzing sediments from Lake Kalksjon in Sweden, we found that the lake's productivity was higher during periods of warmer winters and a positive North Atlantic Oscillation (NAO) polarity. The NAO polarity may serve as a qualitative record of the lake's productivity over the past 9600 years.
CLIMATE OF THE PAST
(2023)
Article
Geography, Physical
Xishuang Li, Yuexia Zhao, Zuosheng Yang, Shuqing Qiao, Baohua Liu, Qiuhong Xie, Yoshiki Saito, Chenguang Liu
Summary: This study estimates the thickness and sediment budget of Holocene marine deposits in the Bohai Sea using high-resolution subbottom profiles. The average thickness of Holocene marine deposits in the Bohai Sea is approximately 7.8 m, with a maximum thickness of 28 m in Jinzhou Bay. Three deposit centers were identified, accounting for approximately 42% of the total Bohai Sea sediments.
Review
Environmental Sciences
Jaia Syvitski, Juan Restrepo Angel, Yoshiki Saito, Irina Overeem, Charles J. Vorosmarty, Houjie Wang, Daniel Olago
Summary: The global sediment cycle is a critical aspect of the Earth system, but human activities and climate warming have significantly altered the sources and sinks of sediment.
NATURE REVIEWS EARTH & ENVIRONMENT
(2022)
