Article
Geosciences, Multidisciplinary
Michael Weber, Yvonne Hinz, Bernd R. Schoene, Klaus Peter Jochum, Dirk Hoffmann, Christoph Spoetl, Dana F. C. Riechelmann, Denis Scholz
Summary: The study presents a paleoclimate record based on four stalagmites from the Huttenblaserschachthohle in western Germany, showing potential climate patterns in the Holocene through trace element and stable isotope data. Sr isotopes reveal soil processes and aquifer recharge, highlighting the importance of a multi-proxy approach. The results suggest the need to replicate speleothem records within a cave system and ideally using other caves in the region to validate the consistency of the proxy data.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geography, Physical
Norbert Marwan, Jonathan F. Donges, Reik Donner, Deniz Eroglu
Summary: This study discusses the importance of identifying and characterising dynamical regime shifts in palaeoclimate time series, introduces several methods based on concepts from nonlinear dynamics, complex systems science, information theory, and stochastic analysis, and applies these methods to analyze marine palaeoclimate proxy records of African climate variations. The results indicate complementarity among these methods in providing information about different aspects of dynamical regime shifts in palaeoclimate, and detect significant correlations of these shifts with variations of Earth's orbit.
QUATERNARY SCIENCE REVIEWS
(2021)
Article
Geography, Physical
Thomas Gravgaard Askjaer, Qiong Zhang, Frederik Schenk, Fredrik Charpentier Ljungqvist, Zhengyao Lu, Chris M. Brierley, Peter O. Hopcroft, Johann Jungclaus, Xiaoxu Shi, Gerrit Lohmann, Weiyi Sun, Jian Liu, Pascale Braconnot, Bette L. Otto-Bliesner, Zhipeng Wu, Qiuzhen Yin, Yibo Kang, Haijun Yang
Summary: This study analyzes model simulations and proxy records to reveal significant variability on a millennial timescale during the Holocene. The dominant oscillation periods are found to be around 120-130 years. The results demonstrate a relatively good agreement between model and proxy data and suggest a potential variability sensitivity or driving mechanism in the high latitudes of the Northern hemisphere.
QUATERNARY SCIENCE REVIEWS
(2022)
Article
Environmental Sciences
Sarah E. Parker, Sandy P. Harrison, Pascale Braconnot
Summary: Through speleothem records, the study found an increase in interannual to interdecadal variability in the Indian monsoon region and a decrease in the East Asian monsoon region during the Holocene. The South American monsoon region showed significant multi-centennial shifts. The analysis also suggests that there is no straightforward link between interannual to interdecadal variability and changes in mean precipitation or orbital forcing at a regional scale over the past 6,000 years.
ENVIRONMENTAL RESEARCH COMMUNICATIONS
(2021)
Article
Geography, Physical
Istvan Gabor Hatvani, Peter Tanos, Manfred Mudelsee, Zoltan Kern
Summary: The detection of periodic fluctuations in paleoclimate data is crucial for understanding past and future climate changes, despite challenges such as chronological uncertainty and variable temporal resolution. Advances in statistical tools have enabled better analysis and consideration of these complexities, leading to improved detectability of periodic signals.
QUATERNARY SCIENCE REVIEWS
(2022)
Article
Environmental Sciences
Matthew J. Hannaford, Kristen K. Beck
Summary: This study examines the climatic information within early colonial documentary records in southeast Africa and west-central Africa to understand rainfall variability over a 280-year period covering the Little Ice Age. It reveals that the two regions were distinct in terms of rainfall variability during the Little Ice Age, with southeast Africa generally drier and west-central Africa generally wetter. Additionally, both regions experienced multi-year droughts despite these mean state climatic conditions. The analysis also shows a complex and possibly non-stationary relationship between long-term rainfall and the El Nino-Southern Oscillation in southeast Africa. Overall, early colonial records provide valuable information for understanding hydroclimate variability in regions with sparse palaeoclimate records.
Article
Geosciences, Multidisciplinary
Dinfa Vincent Barshep, Richard Henry Worden
Summary: Reconstructing provenance in sandstones can be challenging due to unknown hinterland palaeogeology. The use of multiple provenance methods reduces uncertainties in mineral distribution. This study applied petrography, X-ray fluorescence geochemistry and sedimentology to understand the provenance of Corallian sandstones in the Upper Jurassic Weald Basin, UK. Results showed a mixed source and highlighted the importance of a multi-proxy approach in provenance analysis.
GEOLOGICAL JOURNAL
(2023)
Article
Geosciences, Multidisciplinary
Jiantao Cao, Zhiguo Rao, Fuxi Shi, Ergang Lian, Guodong Jia
Summary: This study presents a 15,000-year record of GDGTs in a closed lake in northern China to address the debated issue of lake level and its inferred East Asian summer monsoon (EASM) evolution. Surface and downcore sediment data demonstrate that sedimentary GDGT-0 and brGDGTs are mainly from aquatic production, with higher contents in deeper water. The study shows a gradual increase in lake level from the late Pleistocene to the early Holocene, a peak during 9.5-5 ka BP, followed by a decreasing trend.
SCIENCE CHINA-EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
Prabhin Sukumaran, Dhananjay A. Sant, K. Krishnan, Govindan Rangarajan, Nathani Basavaiah, Jean-Luc Schwenninger
Summary: Analyses of a sedimentary sequence from the Narmada River in southwest India reveal rhythmic cycles of sediment facies representing floods during the late Holocene, influenced by the Indian monsoon and cyclones from the Bay of Bengal or Arabian Sea. Optically stimulated luminescence dating places the sequence in a climate transition phase between the Medieval Warm Period and Little Ice Age, and multi-proxy studies are used to study late Holocene flood events. Integration of sediment records with historic and instrumental data validates the findings and emphasizes the importance of high resolution multi-proxy studies for interpreting paleoflood records and climate signatures.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Ecology
Madeleine Moyle, John F. Boyle, Richard C. Chiverrell
Summary: The study reconstructs trajectories in terrestrial phosphorus dynamics in the Northern Hemisphere during the Holocene using lake sediment records. Mountain sites show falling phosphorus supply following natural soil development, while lowland sites exhibit progressively increasing phosphorus supply due to historic agriculture. The reconstructions provide empirical data for constraining long-term landscape phosphorus cycling models and identify pre-disturbance baselines for lake water quality, essential for target-driven lake management.
Article
Geography, Physical
N. Melissa M. Medina, Francisco W. Cruz, Amos Winter, Haiwei Zhang, Angela Ampuero, Mathias Vuille, Victor C. Mayta, Marilia C. Campos, Veronica Marcela Ramirez, Giselle Utida, Andres Camilo Zuniga, Hai Cheng
Summary: This study presents new oxygen and carbon isotope records of Venezuelan speleothems collected near the Cariaco Basin, revealing long-term and multi-decadal climate variability in the subtropical region. The findings suggest periodic dry and wet periods during the mid-Holocene, potentially related to increased ice rafting and enhanced monsoon activity in the North Atlantic and South America. During the late Holocene, the region experienced a dry Medieval Climate Anomaly and a wet Little Ice Age. The study provides a reliable proxy for ITCZ behavior and teleconnections with other climate systems.
QUATERNARY SCIENCE REVIEWS
(2023)
Article
Ecology
Emma Rehn, Cassandra Rowe, Sean Ulm, Patricia Gadd, Atun Zawadzki, Geraldine Jacobsen, Craig Woodward, Michael Bird
Summary: This study focused on paleofire records from Cape York Peninsula in Australia, highlighting the importance of paleoecology in informing land management practices. The results emphasized the need for finer scale paleofire research to better understand fire histories and improve future fire management planning.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2021)
Article
Geography, Physical
Niccolo Maffezzoli, Bjorg Risebrobakken, Martin W. Miles, Paul Vallelonga, Sarah M. P. Berben, Federico Scoto, Ross Edwards, Helle Astrid Kjaer, Henrik Sadatzki, Alfonso Saiz-Lopez, Clara Turetta, Carlo Barbante, Bo Vinther, Andrea Spolaor
Summary: Sea ice is a key component of Earth's climate, and past reconstructions are essential for understanding its connections with other parts of the climate system. Recent research has shown that biomarkers from marine sediments and elements in ice cores can be used to infer past changes in Arctic sea ice. Analysis of sodium, bromine, and iodine in ice cores from coastal eastern Greenland can provide insights into sea ice variability in the northern North Atlantic over the past 11,000 years. The data suggests that sea ice extent was lowest and seasonal in nature during the early Holocene, followed by increasing sea ice signals from around 8-9 thousand years ago in line with long-term cooling trends.
QUATERNARY SCIENCE REVIEWS
(2021)
Article
Geosciences, Multidisciplinary
Waliur Rahaman, N. Lathika, Priyesh Prabhat, Mohd. Tarique, K. S. Arya, Ravi Mishra, Meloth Thamban
Summary: The northern-eastern Arabian Sea is strongly influenced by land-ocean-climate interactions. It supplies large amounts of dissolved and particulate materials and nutrients through eolian and fluvial supply, which play important roles in biogeochemical processes. This study reconstructs past surface water Nd isotope composition and sediment provenance using eNd and geochemical records, revealing the significant influence of eolian over fluvial inputs during the mid-Holocene and its implications for nutrient supply and biogeochemical processes in the Arabian Sea.
GEOSCIENCE FRONTIERS
(2023)
Article
Geography, Physical
Qiang Shu, Yifei Zhao, Zhou Hu, Peipei Yang, Yu Liu, Ye Chen, Zhijun Zhao, Maoheng Zhang
Summary: The study analyzed the Gangxi profile in the NJP using various methods to elucidate the characteristics of sedimentary environmental evolution during the Holocene and responses to relative sea level changes. The research results show that significant changes in sedimentary environment occurred in the area since approximately 13,550 years ago, transitioning from lacustrine sedimentary environment to tidal flat-shallow sea sedimentary environment and back to lacustrine sedimentary environment.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geography, Physical
Simon van Bellen, Dmitri Mauquoy, Paul D. M. Hughes, Thomas P. Roland, Tim J. Daley, Neil J. Loader, F. Alayne Street-Perrott, Emma M. Rice, Veronica A. Pancotto, Richard J. Payne
Article
Geography, Physical
T. P. Roland, T. J. Daley, C. J. Caseldine, D. J. Charman, C. S. M. Turney, M. J. Amesbury, G. J. Thompson, E. J. Woodley
QUATERNARY SCIENCE REVIEWS
(2015)
Article
Geography, Physical
Dan J. Charman, Matthew J. Amesbury, William Hinchliffe, Paul D. M. Hughes, Gunnar Mallon, William H. Blake, Tim J. Daley, Angela V. Gallego-Sala, Dmitri Mauquoy
QUATERNARY SCIENCE REVIEWS
(2015)
Article
Geography, Physical
T. J. Daley, K. E. Barber, P. D. M. Hughes, N. J. Loader, M. Leuenberger, F. A. Street-Perrott
JOURNAL OF QUATERNARY SCIENCE
(2016)
Article
Geography, Physical
N. J. Loader, F. A. Street-Perrott, D. Mauquoy, T. P. Roland, S. van Bellen, T. J. Daley, D. Davies, P. D. M. Hughes, V. O. Pancotto, G. H. F. Young, M. J. Amesbury, D. J. Charman, G. Mallon, Z. C. Yu
JOURNAL OF QUATERNARY SCIENCE
(2016)
Article
Geography, Physical
Simon van Bellen, Dmitri Mauquoy, Richard J. Payne, Thomas P. Roland, Paul D. M. Hughes, Tim J. Daley, Neil J. Loader, F. Alayne Street-Perrott, Emma M. Rice, Veronica A. Pancotto
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2017)
Article
Chemistry, Analytical
N. J. Loader, F. A. Street-Perrott, T. J. Daley, P. D. M. Hughes, A. Kimak, T. Levanic, G. Mallon, D. Mauquoy, I. Robertson, T. P. Roland, S. van Bellen, M. M. Ziehmer, M. Leuenberger
ANALYTICAL CHEMISTRY
(2015)
Article
Geosciences, Multidisciplinary
Graeme T. a Swindles, Ian T. a Lawson, Ian P. b Matthews, Maarten c Blaauw, Timothy J. d Daley, Dan J. e Charman, Thomas P. f Roland, Gill c Plunkett, Georg g Schettler, Benjamin R. h Gearey, T. Edward a Turner, Heidi A. c Rea, Helen M. c Roe, Matthew J. e Amesbury, Frank M. i Chambers, Jonathan j Holmes, Fraser J. G. k Mitchell, Jeffrey l Blackford, Antony a Blundell, Nicholas m Branch, Jane a Holmes, Peter f Langdon, Julia i McCarroll, Frank n McDermott, Pirita O. k Oksanen, Oliver o Pritchard, Phil m Stastney, Bettina p Stefanini, Dan m Young, Jane q Wheeler, Katharina q Becker, Ian q Armit
EARTH-SCIENCE REVIEWS
(2013)
Article
Geography, Physical
Frank M. Chambers, Sally A. Brain, Dmitri Mauquoy, Julia McCarroll, Tim Daley
Article
Geography, Physical
Matthew J. Amesbury, Gunnar Mallon, Dan J. Charman, Paul D. M. Hughes, Robert K. Booth, Timothy J. Daley, Michelle Garneau
JOURNAL OF QUATERNARY SCIENCE
(2013)
Article
Geography, Physical
Simon Van Bellen, Dmitri Mauquoy, Richard J. Payne, Thomas P. Roland, Tim J. Daley, Paul D. M. Hughes, Neil J. Loader, F. Alayne Street-Perrott, Emma M. Rice, Veronica A. Pancotto
JOURNAL OF QUATERNARY SCIENCE
(2014)
Article
Paleontology
Thomas L. Newton, W. Roland Gehrels, Ralph M. Fyfe, Tim J. Daley
Summary: Proxy records of past sea-level change provide valuable information for extending sea-level histories into the pre-industrial period, especially in regions with limited sea-level data. The use of multi-proxy approaches, combining different micro-organisms, can improve the accuracy of sea-level reconstructions. In this study, surface foraminifera, testate amoebae, and diatoms from a salt marsh in East Falkland were utilized to reconstruct sea-level changes, with the combined multi-proxy regression model showing comparable reconstructive precision to the best single-proxy model.
MARINE MICROPALEONTOLOGY
(2021)
Article
Oceanography
Thomas Frederikse, Surendra Adhikari, Tim J. Daley, Sonke Dangendorf, Roland Gehrels, Felix Landerer, Marta Marcos, Thomas L. Newton, Graham Rush, Aimee B. A. Slangen, Guy Woppelmann
Summary: The study combines new and existing observations to determine that the sea-level rise trend in the South Atlantic Ocean during the 20th century likely ranged between 1.1 and 2.2 mm per year, with a central estimate of 1.6 mm per year. Both observations and physical processes indicate that the South Atlantic experienced sea-level rise about 0.3 mm per year above the global mean, attributed to factors such as ocean dynamics and ice mass loss.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Biodiversity Conservation
Francis M. Rowney, Ralph M. Fyfe, Philip Anderson, Robert Barnett, William Blake, Tim Daley, Katie Head, Alison MacLeod, Ian Matthews, David N. Smith
Summary: This study examines the ecological conditions and disturbance regimes in the Exmoor region of the UK over the past 7700 years. The results demonstrate that drainage and high-intensity grazing in the 19th century significantly altered the local ecosystem, leading to the loss of certain species. The study also provides a range of reference conditions, suggesting that the moorland has been influenced by land management changes for millennia.
BIODIVERSITY AND CONSERVATION
(2022)
Article
Chemistry, Multidisciplinary
Chuxian Li, Jeroen E. Sonke, Gael Le Roux, Natalia Piotrowska, Nathalie Van der Putten, Stephen J. Roberts, Tim Daley, Emma Rice, Roland Gehrels, Maxime Enrico, Dmitri Mauquoy, Thomas P. Roland, Francois De Vleeschouwer
ACS EARTH AND SPACE CHEMISTRY
(2020)