Results 111 to 120 of about 1,276 (229)

Beach Gold and Heavy Mineral Concentrates on Tiwai Spit Gravel Strand Plain, Southland, New Zealand

New Zealand Journal of Geology and Geophysics, Volume 69, Issue 3, September 2026.
The Holocene Tiwai Spit on Foveaux Strait is a 12 km by 2 km gravel‐dominated strand plain, ∼10 m above present sea level. Gravel clasts are dominated by well‐rounded quartz cobbles, pebbles and granules derived from Otago Schist 200 km to the north in evolving river drainage systems during late Cenozoic.
Marshall Palmer, Dave Craw
wiley   +1 more source

River Sand and Gravel Mining: Global Drivers, Impacts, and Pathways for Sustainable Management

Reviews of Geophysics, Volume 64, Issue 3, September 2026.
Abstract River sand and gravel are mined worldwide at volumes that now rival their natural replenishment, yet quantitative knowledge of this mining activity and its consequences lags far behind many other global environmental pressures. We synthesize 411 peer‐reviewed studies published since 1974 within a new Driver‐to‐Management Pathway for ...
Edward Park, Christopher R. Hackney, Dung Duc Tran, Mette Bendixen, Jim Best, Kai Wan Yuen, Hannah Runeckles, Md Sadiul Alam Chyon, Karl Kästner, Sonu Kumar, Halinishi Yusuf, Vanessa Lamb, Lars L. Iversen, Aelis Spiller, Rajiv Sinha, Eduardo Francisco da Silva, Enner Alcantara, Chengcheng Wu, Chengpeng Lu, Chu Jian, Jingyu Wang, Nguyen Duc Thien, Lian Feng, Priyank Pravin Patel, Jiachun Huang, Adam D. Switzer   +25 more
wiley   +1 more source

Modelling Spatial and Temporal Controls on Leaky Wooden Dam Effectiveness for Catchment‐Scale Flood Mitigation in an Upland Catchment

Journal of Flood Risk Management, Volume 19, Issue 3, September 2026.
ABSTRACT Natural Flood Management (NFM) is increasingly adopted as a sustainable strategy for mitigating flood risk. Among these measures, the installation of leaky wooden dams (LWDs) at catchment scale is a widely used intervention aimed at slowing flow and desynchronising runoff peaks between sub‐catchments, thereby reducing flood magnitude.
J. M. Wolstenholme, C. J. Skinner, D. J. Milan, R. E. Thomas, D. R. Parsons   +4 more
wiley   +1 more source

Comprehensive Analysis for the Evaluation of Torrential Floods and Slope Stability of River Channels: La China River Area (Colombia)

Journal of Flood Risk Management, Volume 19, Issue 3, September 2026.
Colombia and other tropical regions face a very high threat from torrential floods, which have resulted in over 25,000 deaths in a single event. Unfortunately, there is no comprehensive assessment methodology to zone and determine the magnitude of these disasters; therefore, this research aims to help fill this gap.
Carlos A. Buenahora Ballesteros, Antonio M. Martínez‐Graña, Mariano Yenes   +2 more
wiley   +1 more source

Optimal spur dike orientation for scour mitigation under downward seepage conditions

Journal of Hydrology and Hydromechanics
River bank protection is vital in hydraulic river engineering to preserve natural rivers, lands, and critical constructions such as bridges. Spur dikes are erosion-protective structures that protrude outward from the river bank in different orientations ...
Patel Harish K., Kumar Bimlesh
doaj   +1 more source

Disorder‐Induced Extremely Low Thermal Conductivity of Graphite Fluoride

Advanced Science, Volume 13, Issue 44, 7 August 2026.
This article investigates the effect of fluorination on the thermal conductivity of graphite fluoride, demonstrating the relationship between structural modification and thermal conductivity in an extreme case. The record‐low through‐plane thermal conductivity measured in exfoliated graphite fluoride flakes was found to correlate with the wide ...
Wonsik Lee, Donghoon Moon, Ziyan Qian, Jinwoo Kim, Changheon Kim, Yeojin Lee, Hyobin Yoo, Richard B. Wilson, Qiye Zheng, Gwan‐Hyoung Lee, Hyejin Jang   +10 more
wiley   +1 more source

Testing the Dry Refuge Model: Paleoecological Insights From Late Pleistocene Gomphotheres in Ecuador

Ecology and Evolution, Volume 16, Issue 8, August 2026.
We present paleontological evidence that may prove the Dry Refuge Model in Ecuador during the Late Pleistocene. ABSTRACT Paleoenvironmental records indicate that Neotropical regions near the Equator experienced reduced rainfall during the Last Glacial Maximum (LGM). However, some records show conflicting environmental signals.
Erwin González‐Guarda, Iván Ramírez‐Pedraza, Carlos Tornero, Lidiane Asevedo, Natalia Villavicencio, Sebastián Escobar, José Luis Román, Melissa Hidalgo, Esteban Benalcázar, Florent Rivals   +9 more
wiley   +1 more source

How many tagged stones are needed to estimate the mean travel distance of sediment from tracer experiments in gravel‐bed rivers?

Earth Surface Processes and Landforms, Volume 51, Issue 8, August 2026.
We propose a statistical model to analyse the impact of tracer sample size and tracer loss on the representativeness of samples in tracer studies in gravel‐bed rivers. Abstract Tagged particles (painted, with inserted magnets, RFID labelled) used as tracers have often been deployed in field experiments focused on tracking the displacement of river ...
Daniel Vázquez‐Tarrío, Thomas Dépret, Laro Incera‐Sañudo, Hervé Piégay   +3 more
wiley   +1 more source

Short‐Term Effects on Rill Erosion and Flow Resistance in a Wood‐Biochar Amended Soil

Hydrological Processes, Volume 40, Issue 8, August 2026.
This investigation evaluates the short‐term effects of wood‐biochar addition, with two different concentrations (BC = 3 and 5%) to soil on rill erosion and flow resistance. The results demonstrated that, in the short term, the addition of BC = 3% is effective in reducing soil erosion phenomena as compared to the control condition, while adding BC = 5 ...
Alessio Nicosia, Costanza Di Stefano, Gaetano Guida, Antonino Lucchese, Vincenzo Palmeri, Vincenzo Pampalone, Vito Ferro   +6 more
wiley   +1 more source

Hydraulic reconstruction of catastrophic drainage from the Late Glacial, Lake Fraser, British Columbia, Canada

Journal of Quaternary Science, Volume 41, Issue 6, Page 873-887, August 2026.
ABSTRACT Glacial Lake Fraser, which formed in British Columbia against the retreating Cordilleran Ice Sheet, stored ~520 km3 of water before its near‐total drainage into the Salish Sea during an outburst flood event. Despite the impact of the outburst flood on sediment transport and landscape evolution in the Fraser River valley, its peak discharge and
Sean M. Loeffler, John J. Clague, Brendan G. N. Miller, Sophie L. Norris   +3 more
wiley   +1 more source