Results 81 to 90 of about 120,778 (201)

Fine‐scale patterns of genetic structure in three species of forest birds reveal dynamic Pleistocene history within an Amazonian interfluve

Ibis, EarlyView.
Phylogeographical studies of Amazonian birds have revealed large intraspecific diversity, even within recognized areas of endemism. To understand the origin and organization of Amazonian diversity, including the influence of current and historical landscapes, we need to evaluate fine‐scale patterns of genetic diversity in relation to detailed ...
Affonso Henrique Nascimento de Souza, Camila Duarte Ritter, João Marcos Guimarães Capurucho, Juliana Menger, Camila Cherem Ribas   +4 more
wiley   +1 more source

Stratigraphy of Fluvial Terraces in the North Uonuma Hill, Niigata Prefecture

Journal of the Japan Society of Engineering Geology, 2006
現在, われわれは2004年新潟県中越地震震源地付近の第四紀後期の地殻変動について検討を進めている. 本稿では, 魚沼丘陵北部に分布する河成段丘層序の調査結果を速報し, さらに, 魚沼丘陵東縁の六日町盆地西縁断層の活動性に触れる. 調査地域に分布する河成段丘は, 空中写真判読調査により, 高位より, Hf, Mf, Lf面に区分される. さらに, Hf面はHf 1～3面に, Lf面は, Lf1～4面に細分される. 続いて, 火山灰層序に基づいてこれらの編年を行った. Hf 3面は海洋酸素同位体ステージ (MIS) 6よりも古く, MIS 8に対比される可能性がある. Mf面はMIS 6に対比される可能性が高い.
Ryuta HATAYA, Makoto YANAGIDA, Shinya YAMAMOTO, Masaru SATO, Akira FURUSAWA   +4 more
openaire   +2 more sources

Bio‐mediated cementation of supratidal beach sediments associated with groundwater springs

Sedimentology, EarlyView.
ABSTRACT The formation of beachrock, sensu stricto, via carbonate precipitation in the intertidal zone is widespread throughout the tropics and subtropics. While cementation of supratidal beach sediments has also been noted in several locations, it has received much less attention.
Thomas William Garner, J. Andrew G. Cooper   +1 more
wiley   +1 more source

Global Hydroclimatic Controls on Multithread River Dynamics

AGU Advances, Volume 7, Issue 2, April 2026.
Abstract Most large rivers in densely populated areas split flow into multiple channels, forming interconnected pathways called threads. Multithread rivers are sensitive to hydroclimatic changes, yet understanding their dynamics is challenging due to the lack of robust metrics to characterize their evolution.
Feifei Zhao, Vamsi Ganti, Austin Chadwick, Evan Greenberg, Jonah McLeod, Yinxue Liu, Louise Slater, Efi Foufoula‐Georgiou   +7 more
wiley   +1 more source

Application of RMR89–NATM Rock Mass Classification for Tunnel Design: A Case Study From Bilaspur, Himachal Pradesh, India

Engineering Reports, Volume 8, Issue 3, March 2026.
The Bilaspur region lies in a highly seismic zone, requiring special attention for infrastructure development like tunnel construction. Rock strength in the area is low, posing challenges for stable tunnel design. RMR values range from 21 to 30, categorizing the rock mass as Poor, requiring robust support measures.
Baalamurugan Arumugam, Selvam Sekar, Muthukumar Perumal, Jesuraja Kamaraj, Muralitharan Jothimani   +4 more
wiley   +1 more source

Fluvial terrace formation in a mountainous area (2): influence of eustatism, tectonics and altitudinal distribution of watersheds based on an allostratigraphic study (Albania)

Comptes Rendus. Géoscience
Terraces are highly developed along the Albanian rivers and eleven levels of terraces are recognized in the area, nine occurring during the last glacial cycle (MIS 5d to end of MIS 2).
Mugnier, Jean-Louis, Guzmán, Oswaldo, Vassallo, Riccardo,  Matraku, Kristina, Jouanne, François   +4 more
doaj   +1 more source

KLIMONAS-Ch03-A03 – Description of the fluvial terraces profiles under study

, 2023
Appendix of: Vigne J.-D., Briois F., Guilaine J. (eds.), « Klimonas, an Early Pre-Pottery Neolithic village in Cyprus », Gallia Préhistoire & Paléorient, International Supplement 1, CNRS Éditions, Paris, 2023.
DEVILLERS, Benoît, MYLONA, Pantelitsa
openaire   +2 more sources

A framework for in‐stream jams formed by snow avalanche‐delivered large wood

Earth Surface Processes and Landforms, Volume 51, Issue 3, March 2026.
Large wood delivered by avalanches organizes into blanket or transport jam complexes.Jam complexes increase channel width and promote pool and bar formation. Avalanche frequency and magnitude, which are dependent on hillslope angle and roughness characteristics, controls jam complex type.
Nathaniel H. Cutler, Sarah A. Schanz, John T. Kemper   +2 more
wiley   +1 more source

Erosive Response of Non-Glaciated Pyrenean Headwater Catchments to the Last Major Climate Transition and Establishing Interglacial Conditions

Quaternary, 2019
Non-glaciated mountain headwater catchments feature high-resolution geomorphic archives, which provide important insight into erosive processes and sediment dynamics in mountain ranges.
Kurt Martin Stange, Ivar Midtkandal, Johan Petter Nystuen, Andrew Murray, Reza Sohbati, Warren Thompson, Cornelia Spiegel, Hans-Joachim Kuss   +7 more
doaj   +1 more source

Reconstructing human‐induced geomorphic changes through historical maps and multitemporal remote sensing data in the Cancano–San Giacomo di Fraele reservoirs (Central Alps, Italy)

Earth Surface Processes and Landforms, Volume 51, Issue 3, March 2026.
Reconstructing ~200 years of landscape change at the Cancano–San Giacomo hydroelectric system (Central Alps), we integrate historical cartography, archival photographs, multitemporal aerial/satellite imagery and field validation to map pre‐ and post‐impoundment landforms.
Luca Forti, Manuela Pelfini, Anna Masseroli, Michele Zucali, Fabrizio Felletti, Stefano Morosini, Fabrizio Trisoglio, Andrea Zerboni, Roberto Sergio Azzoni   +8 more
wiley   +1 more source