Article
Geography, Physical
Guocheng Dong, Weijian Zhou, Feng Xian, Yunchong Fu, Li Zhang, Ling Tang, Pengkai Ding
Summary: The cause of ice-age cycles is still not fully understood, and studying the timing and magnitude of mountain glaciations can provide valuable insights. This study presents new dating results from the Niqingqu Valley in the Tibetan Plateau, showing multiple glacial activities prior to the Penultimate Glacial Maximum. The findings suggest that low atmospheric CO2 content and reduced summer solar insolation/high summer-monsoon precipitation played a role in these glacial fluctuations.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Haoran Dong, Zhitong Chen, Yucheng Wang, Jie Chen, Zhiping Zhang, Zhongwei Shen, Xinwei Yan, Jianbao Liu
Summary: Through sediment records from Lake Nanyi in the lower Yangtze, we found that anthropogenic fire activity played a dominant role in the region, and the temporal pattern of fire activity was asynchronous from east to west. Archaeological evidence suggests an inverse relationship between agricultural and population levels and fire intensity during the mid-Holocene, with fire intensity being influenced by the diversity of landscape types associated with pre-historic subsistence patterns. Overall, changes in regional water-level delayed the transition from hunting-gathering to agriculture in the lower Yangtze region.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2024)
Article
Geography, Physical
Shuang Bian, Xibin Tan, Yiduo Liu, Suoya Fan, Junfeng Gong, Chao Zhou, Feng Shi, Michael A. Murphy
Summary: The Yarlung River's drainage divide is primarily moving north due to variations in precipitation across the Himalayas. The Gangdese drainage divide shows predominantly northward and southward migration, controlled by base-level rise and downstream influences. The presence of north-trending rifts separates the drainage divides into five zones, each with a distinct migration pattern.
Article
Geography, Physical
Patrick Chiroiu, Alexandru L. Onaca, Adrien Favillier, Mircea Voiculescu, Christophe Corona, Petru Urdea, Markus Stoffel
Summary: Snow avalanches present a constant threat to mountainous regions worldwide, and understanding past avalanche events is crucial for managing and mitigating avalanche hazards and risks. In this study, dendrogeomorphic techniques were used to analyze 17 avalanche paths in a small region of the Fagaras Mountains. The analysis reconstructed 174 snow avalanche years across all paths and revealed widespread avalanche occurrence in the study area. The study emphasizes the importance of investigating multiple avalanche paths in a small, homogeneous area to gain a better understanding of snow avalanche activity at both path-scale and mountain range-scale.
QUATERNARY GEOCHRONOLOGY
(2024)
Article
Ecology
Yutian Lu, Running Chen, Bin Chen, Jiayu Wu
Summary: The inequitable distribution of urban green spaces has become a significant concern, with variations found between cities in different development stages, and socioeconomic factors playing a crucial role in the spatial equity of urban green spaces.
LANDSCAPE AND URBAN PLANNING
(2024)
Article
Ecology
Chiwei Xiao, Yi Wang, Mingyan Yan, Jeffrey Chiwuikem Chiaka
Summary: Regional integration initiatives, such as cross-border transportation corridors, have significant impacts on land use changes and landscape patterns. This study examines the China-Laos Railway as a case study to evaluate the extent and significance of these impacts. Using land-use data and geospatial analysis, the study quantifies and compares the effects of the railway on land use changes within a buffer zone along the corridor.
LANDSCAPE AND URBAN PLANNING
(2024)
Article
Geography, Physical
David J. Barclay, Peter J. Haeussler, Robert C. Witter
Summary: A study in Girdwood, south-central Alaska, shows that a forest bed of tree stumps in the intertidal zone records coseismic submergence during the penultimate great earthquake. The study uses tree-ring samples to develop a long ring-width chronology and finds that the last ring of the chronology dates back to 1169 to 1189 CE. The study also indicates that previous dates from Bayesian models of coastal salt marshes do not match the findings from the tree-ring samples.
QUATERNARY SCIENCE ADVANCES
(2024)
Article
Geography, Physical
Sebastian Yrarrazaval, Isabel Cartajena, Luis Borrero, Diego Salazar
Summary: The taphonomic evaluation of zooarchaeological assemblages is crucial for understanding past subsistence strategies and bone deposition. A recent trend in this field focuses on bone surface modifications (BSM) and uses machine learning algorithms to classify and assign traces to specific processes. This study proposes simplifications to make this approach more accessible, including a trace-oriented data recording protocol and a Naive Bayes Classifier (NBC) approach. The authors demonstrate the value of these proposals by analyzing assemblages from the Atacama Desert and achieving high accuracy in discriminating between archaeological and actualistic samples.
QUATERNARY SCIENCE ADVANCES
(2024)
Article
Geography, Physical
Monika Devi, Naveen Chauhan, Ashok K. Singhvi
Summary: Devi et al. (2022) suggested that post-violet infrared stimulated luminescence (pVIRSL) of K-feldspars has a near zero athermal fading rate. This study investigates the mechanism and suitability of the pVIRSL signal for dating applications. The results show that pVIRSL is a recuperated signal resulting from the eviction and recapture of charges in deep traps by violet stimulation and subsequent infrared stimulation. The pVIR-SAR protocol worked well for dating seven K-feldspar samples from various depositional environments.
QUATERNARY GEOCHRONOLOGY
(2024)
Article
Ecology
Daniele Codato, Francesca Peroni, Massimo De Marchi
Summary: This study examines climate justice in the Ecuadorian Amazon Region (EAR), highlighting the multiple injustices caused by oil extraction activities. Using spatial analysis, the study shows that the EAR has been a major producer of oil since 1972, leading to environmental impacts such as oil spills and pollution. The results emphasize the need to include these territories in climate justice discussions and promote the rights to a non-toxic environment.
LANDSCAPE AND URBAN PLANNING
(2024)
Article
Ecology
Jingli Yan, Wendy Y. Chen, Zixiao Zhang, Wenxing Zhao, Min Liu, Shan Yin
Summary: Vegetation barriers are an effective strategy in urban planning to mitigate traffic-induced air pollution and reduce exposure. This study uses field measurements and numerical modeling to show that constructing vegetation barriers with short bushes can effectively reduce PM2.5 pollution in open-road environments, while higher coverage of tall bushes may worsen the pollution.
LANDSCAPE AND URBAN PLANNING
(2024)
Article
Ecology
Di Chen, Jie Yin, Chia-Pin Yu, Shengjing Sun, Charlotte Gabel, John D. Spengler
Summary: Observational and experimental studies have shown that exposure to greenness is beneficial for long-term health and well-being. However, more evidence is needed regarding the short-term health impacts of nearby nature in urban areas. This study used immersive virtual reality technology to investigate how transitions between built and natural environments affect urban residents. Results showed that transitioning from built to natural environments led to reductions in negative mood and transient anxiety, while transitions from natural to built environments had the opposite effect. Additionally, participants showed more emotional responses to nature through physiological measures. The study also highlighted the influence of contextual factors, such as physical health conditions, stress levels, experience with nature, and growth environments, on stress recovery. Overall, this study provides empirical evidence supporting the promotion of nearby nature in urban built environments.
LANDSCAPE AND URBAN PLANNING
(2024)
Article
Geography, Physical
Chloe Baldreki, Andrew Burnham, Martina Conti, Lucy Wheeler, Michael J. Simms, Lawrence Barham, Tom S. White, Kirsty Penkman
Summary: Aragonitic calcium carbonate mollusc shells with complex shell microstructures can be used for amino acid geochronologies in Africa. Different microstructural shell layers may have different protein compositions, requiring sampling strategies. The 3AL shell portion showed closer adherence to closed-system behavior and demonstrated the potential of fossil achatinids for building relative amino acid geochronologies across Africa.
QUATERNARY GEOCHRONOLOGY
(2024)
Article
Ecology
Timothy Fraser, Olivia Feeley, Andres Ridge, Ava Cervini, Vincent Rago, Kelly Gilmore, Gianna Worthington, Ilana Berliavsky
Summary: This study examines the inequality of social infrastructure in Boston, finding significant racial and income disparities in access. These disparities have implications for the health and resilience of neighborhoods.
LANDSCAPE AND URBAN PLANNING
(2024)
Article
Geography, Physical
T. Tesi, A. Asioli, E. Previde Massara, P. Montagna, C. Pellegrini, A. Nogarotto, A. Cipriani, A. Piva, F. Muschitiello, M. Rovere, P. Viaggi, F. Trincardi
Summary: This study reconstructs the physical forcing controlling the deoxygenation events in the Eastern Mediterranean Sea during the Quaternary and highlights the quicker response of thermohaline forcing to climate change than previously thought. The results also provide solid evidence of the large-scale impact of deoxygenation events on the continental shelf and suggest that current climate change scenarios do not reproduce similar events.
QUATERNARY SCIENCE ADVANCES
(2024)
Article
Geography, Physical
Konstanze Stuebner, Mustafo Gadoev, Georg Rugel, Johannes Lachner, Bodo Bookhagen
Summary: Determining the spatial and temporal variations of Pleistocene glaciations is crucial in understanding the present-day climate-driven glacier changes. This study provides new 10Be exposure ages from various sites in the southwestern Pamir, allowing for a better understanding of the timing and extent of the glaciations in the region. The results highlight the importance of studying glacial activity in the Pamir region and its implications for climate change.
QUATERNARY SCIENCE ADVANCES
(2024)
Article
Geography, Physical
Kapil Mohan, Shruti Dugar, Vasu Pancholi, Vinay Kumar Dwivedi, Naveen Kumar, B. Sairam, Sumer Chopra
Summary: Micro-seismic hazard assessment of Bhuj city has been conducted using geophysical and geotechnical parameters as well as seismotectonics and shallow subsurface modeling. The study reveals a wide range of surface-level strong ground motion in Bhuj city, influenced by soil types and seismic activity.
QUATERNARY SCIENCE ADVANCES
(2024)
Article
Geography
Alexander M. Barrett, Jack Wright, Elena Favaro, Peter Fawdon, Matthew R. Balme, Mark J. Woods, Spyros Karachalios, Eleni Bohachek, Elliot Sefton-Nash, Luc Joudrier
Summary: This study presents a DL-based map classification system for the landing site on Mars. By training a DL network with the developed hierarchical scheme, the system achieved high agreement with manually mapped areas. The resulting map is presented in both descriptive classes and interpretive groups, allowing for intuitive analysis by human users.
Article
Geography, Physical
Wenqiang Zhang, Geping Luo, Rafiq Hamdi, Xiumei Ma, Yuzhen Li, Xiuliang Yuan, Chaofan Li, Qing Ling, Olaf Hellwich, Piet Termonia, Philippe De Maeyer
Summary: This study investigates the uncertainty of different GPP products and their potential drivers over the Central Asia (CA) region. The results reveal the spatial distribution and relative uncertainties of ten GPP products, with FLUXCOM showing smaller uncertainties compared to others. The study also provides improvement strategies for each product based on their specific sources of uncertainty. These findings not only inform the selection of GPP products in carbon cycle studies, but also contribute to the development and improvement of GPP models for dryland ecosystems.
GISCIENCE & REMOTE SENSING
(2023)
Article
Geography, Physical
Ethan D. Kyzivat, Laurence. C. Smith
Summary: Landsat has been used for surface water mapping since 1972, but its 30 m resolution limits the detection of small water bodies. In this study, a 10x super resolution model trained with high-resolution imagery improved the detection of small lakes in Landsat imagery and produced images with preserved radiometric properties. The super resolution transformation achieved a higher F-1 score for water detection compared to native-resolution Landsat.
GISCIENCE & REMOTE SENSING
(2023)
