Article
Geography, Physical
Anne Guyez, Stephane Bonnet, Tony Reimann, Sebastien Carretier, Jakob Wallinga
Summary: SG-pIRIR is a method for dating Quaternary deposits, particularly suitable for fluvial deposits that cannot be dated by conventional quartz optically stimulated luminescence dating. It can be used to reconstruct sediment sources and pathways.
EARTH SURFACE PROCESSES AND LANDFORMS
(2022)
Article
Geosciences, Multidisciplinary
Francesco Turco, Yoann Ladroit, Sally J. Watson, Sarah Seabrook, Cliff S. Law, Gareth J. Crutchley, Joshu Mountjoy, Ingo A. Pecher, Jess I. T. Hillman, Susi Woelz, Andrew R. Gorman
Summary: This study investigates active gas seepage sites along the Hikurangi Margin off the North Island of New Zealand using seismic reflection, multibeam, and split-beam hydroacoustic data. The research reveals significant gas emissions in the region, which may impact seafloor biological communities and ocean biogeochemistry.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geology
Jonathan D. Paul
Summary: The study used a database of river basins in Africa to investigate the impact of uplift and erosion on landscape development. Results showed that eroded rock volume is a proxy for fluvial incision and strongly correlates with long-wavelength gravity anomalies across Africa, but not with mean precipitation. The study suggests that spatial variations in epeirogenic uplift govern landscape evolution across the continent.
Article
Construction & Building Technology
Jiajia Zhang, Jiankang Liu, Yuanling Li, Junchao Wang, Long Chen, Bo Gao
Summary: This study investigates the differences in glacier and geomorphology conditions for glacier-related debris flows to occur in the Parlung Zangbo River valley on the Tibetan Plateau. The results suggest that the north bank is more prone to debris flows compared to the south bank.
ADVANCES IN CIVIL ENGINEERING
(2022)
Article
Environmental Sciences
Vikram Gupta, Ambar Solanki, Shradha Jagtap, Mallickarjun Joshi, S. S. Bhakuni
Summary: In this study, the causes and distribution of landslides in the region between village Jauljibi and Dobaat along the Kali river were investigated. Various geomorphic indices were used to understand the active tectonics of the region and the disposition of the rocks with respect to the terrain. The results showed that the region between Dharchula and Dobaat is the most tectonically active, followed by Dhap-Kalika and Jauljibi-Baniyagaon regions.
ENVIRONMENTAL EARTH SCIENCES
(2022)
Article
Multidisciplinary Sciences
Daniel Leduc
Summary: A research voyage to New Zealand's Hikurangi Margin in 2019 revealed six new species of deep-sea nematodes, some of which are first-time records in the region.
Article
Geography, Physical
Hugh G. Smith, Raphael Spiekermann, Harley Betts, Andrew J. Neverman
Summary: Understanding landslide susceptibility modeling is hindered by challenges in acquiring landslide inventory data, particularly in areas like New Zealand where storm events trigger numerous landslides. The study found that using semi-automated mapping and different inventory records can impact the performance of landslide susceptibility modeling methods, but the spatial patterns in susceptibility were generally similar.
Article
Geology
Dave Craw, Ciaran Campbell, Jonathan M. Waters
Summary: This study provides a regional synthesis of river drainage reconfiguration in Southland, New Zealand from the Miocene to the Holocene, using multidisciplinary observations. The research combines sedimentary clasts, freshwater fish genetics, surface geomorphology, and basement geology to understand the changes in river drainage directions and interconnections over time. The findings show that local tectonic uplift, linked to the distant Alpine Fault tectonism, has played a dominant role in river evolution in South Island. The study also reveals that Pleistocene range uplift has caused significant reorientation of river drainage in Southland, similar to processes observed in Central Otago.
NEW ZEALAND JOURNAL OF GEOLOGY AND GEOPHYSICS
(2022)
Article
Engineering, Geological
Matthew E. Cook, Martin S. Brook, Ian J. Hamling, Murry Cave, Jon F. Tunnicliffe, Rachel Holley
Summary: This study utilizes InSAR processing and other observational data to reveal the deformation of the steep terrain surrounding Gisborne in the North Island of New Zealand. The results indicate that 132 unstable slopes were caused by soil creep and earthflows triggered by heavy rainfall, and the deformation also shows a seasonal variation correlated with rainfall.
Article
Geosciences, Multidisciplinary
Yiqi Ji, Shengrui Su, Qiangbing Huang
Summary: This study analyzed geomorphological indicators of the drainage basin of the upper Yellow River, combined with field observations and estimated incision rates, to establish a reasonable tectonic deformation model. The results demonstrate a high consistency between active tectonics and variations in geomorphic indices, with the Jianzha-Xunhua basin showing a higher tectonic uplift rate and numerous giant landslides.
GEOLOGICAL JOURNAL
(2022)
Article
Meteorology & Atmospheric Sciences
Laura E. Queen, Sam Dean, Daithi Stone, Roddy Henderson, James Renwick
Summary: Anthropogenic climate change is impacting rivers globally, jeopardizing water availability and changing natural hazard risks. Analyzing regional streamflow trends can provide valuable information for developing policies to mitigate and adapt to the associated negative impacts on society and the environment. This study presents a comprehensive dataset of long-term, near-natural streamflow records in New Zealand (NZ) and the first nationwide analysis of observed spatio-temporal streamflow trends. By aggregating data within homogeneous hydrologic regions, significant regional trends are revealed. The findings demonstrate the influence of decadal variability in specific seasons and regions, with both increasing and decreasing streamflow trends observed across NZ. Correlations between streamflow and climate indices highlight the primary drivers of hydrologic behavior and suggest possible impacts of climate change on NZ hydrology.
JOURNAL OF HYDROMETEOROLOGY
(2023)
Article
Geochemistry & Geophysics
Yuhui Ye, Lei Wu, Eric Cowgill, Yuntao Tian, Xiubin Lin, Ancheng Xiao, Hanlin Chen
Summary: Quantifying the interaction between tectonics and climate in shaping the northern margin of the Tibetan Plateau, this study investigates the histories of rock uplift and erosion in the Altyn Shan region using low-relief high-elevation surfaces and combined bedrock and detrital apatite analyses. The findings suggest a long-lagged response of accelerated river incision to tectonic-driven rock uplift, with the delayed incision likely resulting from low erosional efficiency during arid climate intervals. These results demonstrate the interplay between tectonics and climate in landform development and have implications for understanding the Cenozoic evolution of the northern margin of the Tibetan Plateau.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Erica Spain, Geoffroy Lamarche, Vanessa Lucieer, Sally J. Watson, Yoann Ladroit, Erin Heffron, Arne Pallentin, Joanne M. Whittaker
Summary: Understanding fluid expulsion is essential for estimating gas exchange volumes, locating ecosystems, and geohazard modeling. This study investigates the links between water-column acoustic flares, seafloor backscatter, and bathymetric metrics to develop predictive models of active fluid expulsion. The results show that active fluid expulsion is not typically associated with hardgrounds, but with unconsolidated sediment cover around them.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Engineering, Geological
Max O. Kluger, Stefan Kreiter, Vicki G. Moon, R. Robert Roskoden, Tobias Moerz
Summary: Volcanic ash deposits from New Zealand contain high concentration of the secondary clay mineral halloysite, leading to high sensitivity in the soils. The compression behavior of intact tephras depends on sensitivity, while remolded tephra appears to be less affected by sensitivity and halloysite morphology. The permeability of remolded tephra samples is generally smaller than that of sedimentary clays, and for halloysite-rich tephra, the permeability of remolded samples is smaller than intact samples. There is a strong positive relationship between permeability sensitivity and sensitivity, and a moderate correlation between halloysite morphology and permeability sensitivity.
ENGINEERING GEOLOGY
(2022)
Article
Geochemistry & Geophysics
Brandon Shuck, Harm Van Avendonk, Sean P. S. Gulick, Michael Gurnis, Rupert Sutherland, Joann Stock, Jiten Patel, Erin Hightower, Steffen Saustrup, Thomas Hess
Summary: The Puysegur margin in the southern New Zealand region has experienced a series of tectonic events over the past 45 million years, transitioning from rifting to strike-slip to incipient subduction. Through deep-penetrating imaging techniques, it has been revealed that subduction initiation in the Puysegur Trench was likely assisted by inherited structural weaknesses imprinted into the lithosphere during earlier continental rifting and strike-slip events. Forced nucleation along a strike-slip boundary is identified as a viable subduction initiation scenario, which has implications for understanding subduction initiation throughout Earth's history.
Article
Geology
Vincent Caron, Julien Bailleul, Frank Chanier, Geoffroy Mahieux
SEDIMENTARY GEOLOGY
(2019)
Article
Geology
Vincent Caron, Julien Bailleul, Frank Chanier, Geoffroy Mahieux, Francois-Xavier Joanny
Article
Geosciences, Multidisciplinary
F. Odonne, A. Maillard, C. Lezin, F. Chanier, V Gaullier, D. Guillaume
MARINE AND PETROLEUM GEOLOGY
(2019)
Article
Paleontology
Alex Osso, Cyril Gagnaison, Julien Bailleul
Article
Geochemistry & Geophysics
Marie Catherine Genge, Cesar Witt, Frank Chanier, Jean-Yves Reynaud, Ysabel Calderon
Article
Geology
Adam D. McArthur, Julien Bailleul, Geoffroy Mahieux, Barbara Claussmann, Alex Wunderlich, William D. McCaffrey
Summary: The study examines the sedimentation patterns along the Hikurangi subduction margin, revealing the interplay between different density sediment deposits and the underlying mechanisms. It demonstrates the complex interactions between geological structures and sediment in deep marine environments.
JOURNAL OF SEDIMENTARY RESEARCH
(2021)
Article
Geosciences, Multidisciplinary
B. Claussmann, J. Bailleul, F. Chanier, V. Caron, A. D. McArthur, G. Mahieux, C. Chaptal, B. C. Vendeville
Summary: This study investigates the implications of mixed siliciclastic-carbonate shelfal domains in different geotectonic settings on the development of gravity-driven systems beyond the shelf edges. Results show that the structural setting of the sediment source controls the development of varied shelf-derived gravity-driven depositional systems, with backlimb sourced deposits exhibiting more complex internal architectures.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geology
Vincent Caron, Julien Bailleul, Frank Chanier, Geoffroy Mahieux
Summary: The Early Miocene limestones from the Wairarapa region of New Zealand were deposited on thrust-bounded margins of trench-slope basins, consisting of two superposed stratal units interpreted as forced regressive and forced transgressive foralgal and rhodolith-bearing deposits. These strata can be explained within a tectono-eustatic based framework involving rapid sea-level changes and transitions between different sediment types in a tectonically active setting.
NEW ZEALAND JOURNAL OF GEOLOGY AND GEOPHYSICS
(2022)
Article
Geology
Barbara Claussmann, Julien Bailleul, Frank Chanier, Geoffroy Mahieux, Vincent Caron, Adam D. McArthur, Corentin Chaptal, Hugh E. G. Morgans, Bruno C. Vendeville
Summary: The study provides insights into the nature and development mechanisms of shelf-derived mass-transport deposits along tectonically active margins, highlighting the impact of tectonic activity on the evolution of subduction complexes and their trench-slope basins.
NEW ZEALAND JOURNAL OF GEOLOGY AND GEOPHYSICS
(2022)
Article
Geosciences, Multidisciplinary
Pierre Malie, Julien Bailleul, Frank Chanier, Rafael Ferreiro Mahlmann, Renaud Toullec, Geoffroy Mahieux, Sebastien Potel
Summary: There is a strong relationship between tectonic structures and fluid migrations in the Hikurangi subduction wedge in New Zealand. Solid bitumen has been found in tubular carbonate concretions and fault gouge, indicating migrated thermogenic fluid. Various methods were used to determine the thermal maturity and diagenesis grade of the rocks in the study area. The structural thickening caused by tectonic thrust-sheet stacking is responsible for local organic maturation.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geology
Adam D. McArthur, Julien Bailleul, Frank Chanier, Alan Clare, William D. McCaffrey
Summary: The fill of trench-slope basins is complex and varies temporally, laterally, and longitudinally. External controls, filling progression, and autogenic processes all play a role in influencing sedimentation in these basins. This study highlights the importance of understanding these factors for interpreting the evolution of basin fill in trench-slope environments.
NEW ZEALAND JOURNAL OF GEOLOGY AND GEOPHYSICS
(2022)
Article
Geosciences, Multidisciplinary
Sebastien Rohais, Julien Bailleul, Sandra Brocheray, Julien Schmitz, Paolo Paron, Francis Kezirian, Pascal Barrier
Summary: The study focuses on the detailed characterization of intraslope lobes of the Motta San Giovanni Formation, with proposed recognition criteria and a depositional model for these types of lobes. The diagnostic model includes four main stages of evolution, showing the development of intraslope lobes along active transform margins.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Agnes Maillard, Virginie Gaullier, Carine Lezin, Frank Chanier, Francis Odonne, Johanna Lofi
BSGF-EARTH SCIENCES BULLETIN
(2020)
Article
Geography, Physical
A. Securo, C. Del Gobbo, L. Rettig, S. Pillon, A. De Luca, D. Fontana, E. Benedetti Fasil, R. R. Colucci
Summary: Small glaciers in temperate mountain regions have experienced significant reduction and unprecedented melt rates in recent years. Some glaciers have transitioned from clean ice to debris-covered or even rock glaciers. This study examines the surface elevation change of the Popera Alto glacier in the Sesto Dolomites using LiDAR and Structure from Motion surveys, and analyzes its evolution in terms of surface cover and geomorphic processes. The glacier has lost an average of 0.35 m water equivalent per year over the past 16 years, with active modification of its surface cover by geomorphic processes. The role of debris and local topography feedback has allowed the resilience of the glacier, leading to a marked difference between the current environmental equilibrium line altitude (envELA) and the effective ELA (effELA) of the glacier.
Article
Geography, Physical
Zhenzhen Yan, Yaolin Shi, Lili Kang, Xiangtao Fan
Summary: This study proposes a quantitative regional deformation model based on global positioning system (GPS) data to quantitatively analyze the morphological evolution of rivers in the Three Rivers Region. It finds that tectonic deformation phases significantly control regional landscape development and drainage features.
Article
Geography, Physical
Said Mukhtar Ahmad, Nitheshnirmal Sadhasivam, Mona Lisa, Luigi Lombardo, Mustafa Kemal Emil, Amira Zaki, Cees J. Van Westen, Islam Fadel, Hakan Tanyas
Summary: In this study, we investigated a large slow-moving landslide in Northern Pakistan, using Interferometric Synthetic Aperture Radar (InSAR) analysis. Our results showed that the crown of the landslide is moving faster than the surrounding regions, while the footslope experienced high deformations. We discussed the possible roles of meteorologic and anthropogenic factors in causing these deformations.
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
Joon-Young Park, Seok Yoon, Deuk-Hwan Lee, Seung-Rae Lee, Hwan-Hui Lim
Summary: This study developed a multiple-regression model to estimate site-specific average growth rates of debris flow events. The proposed model was validated through a case study and showed reasonable predictions of debris flow velocities and heights.
Article
Geography, Physical
Nicholas Reilly Mccarroll, Arnaud Temme
Summary: New geochronological data from hillslope boulder armor in the Flint Hills reveal the rates and timing of lateral retreat in the landscape. Surfaces of limestone boulders dating back to the Pleistocene era were found, and the ages of the hillslope armor increased with distance from the limestone bench. The estimated rate of lateral retreat in this landscape is 0.02 mm/yr.
Article
Geography, Physical
Xinbo Yao, Yuntao Tian
Summary: By studying the Longmenshan-Minshan drainage divide, we found that it has reached a dynamic steady state, indicating a balance between erosion and rock uplift. This study also reveals the process of formation and evolution of the divide and raises questions about the effectiveness of divide migration metrics.
Article
Geography, Physical
Junhui Yu, Pin Yan, Yanlin Wang, Guangjian Zhong, Changliang Chen
Summary: The seafloor mounds in the Chaoshan Depression of the South China Sea are identified as mud volcanoes, with fluids coming from underlying mud-fluid diapirs. The hydrocarbon gases feeding the mud volcanoes and diapirs are reasoned to originate from deep Mesozoic source rocks, indicating significant Mesozoic hydrocarbon potential in the Chaoshan Depression.
Article
Geography, Physical
Marius Huber, Luc Scholtes, Jerome Lave
Summary: This paper investigates the relationships between hillslope stability and fabric anisotropy of brittle rock materials and the implications for landscape shaping. It explores the different stability modes and movement characteristics of anisotropic materials, and demonstrates the significant control of material anisotropy on landscape shaping.
Article
Geography, Physical
Shubhra Sharma, Anil D. Shukla
Summary: The study investigates the relationship between glacial dynamics and lake sedimentation during the mid-Holocene climate variability in the Southern Zanskar ranges. It utilizes geomorphological disposition, elemental geochemistry, and optical chronology of relict lake sediment to reconstruct the pattern of minor glacier responses to climate variability. The results indicate six centennial to millennial-scale climatic phases, with warmer phases represented by decreased mineralogical fine grain flux and increased coarse grain flux. The study highlights the potential of relict lake sediment and para/peri-glacial landforms in understanding glacial dynamics and climate change during the Holocene.
Article
Geography, Physical
Jean-Francois Bernier, Sydney W. Meury, Patrick Lajeunesse
Summary: In this study, an approach combining various data and observation methods was proposed to improve the monitoring of landfast ice dynamics and its geomorphic impact on sedimentary systems. The results demonstrate the ability of the approach to accurately measure interannual variations in landfast ice and constrain geomorphic changes. Additionally, the study found a strong relationship between the severity of freezing seasons and the response of landfast ice to hydrometeorological events, with different geomorphic responses observed under different winter conditions.
Article
Geography, Physical
Heping Shu, Fanyu Zhang
Summary: This study investigates the relationship between susceptibility of soil-water hazards and human activities, geoheritage sites in the Loess Plateau, China. Landslide and gully erosion susceptibility were obtained using gradient boosting and support vector machines, and a hazard matrix was formed to couple landslide and gully erosion susceptibility. The study found different trends in the magnification times of soil-water hazards chain under different scenarios.
Article
Geography, Physical
Guangqiang Qian, Zhuanling Yang, Xuegang Xing, Zhibao Dong, Youyuan Guo
Summary: Granule ripples are aeolian landforms armored against erosion by coarse grains. This study investigates their seasonal morphological evolution and migration in the Sanlongsha Dune Field. The findings show that wind events, especially those exceeding the threshold velocities of coarse grains, significantly influence the morphodynamics of granule ripples. The study highlights the importance of considering the reptation and saltation of coarse grains in future research on granule ripples.
