Results 51 to 60 of about 626 (161)

Distribution of Orthoptera across the river valley (Kaluga-Aleksin canyon, European Russia) and their dynamics under the overgrowing of meadows

Nature Conservation Research: Заповедная наука
Orthoptera insects (hereinafter – orthopterans) play a key role in grassland ecosystems and are often used as indicators of their condition. To conserve these insects and to model their habitat preferences, we need to know patterns of their distribution ...
Victor V. Aleksanov
doaj   +1 more source

Late Quaternary fluvial terrace characteristics and ages of the Pamir‒Tian Shan convergence zone: indications of regional climate change and tectonic uplift

Frontiers in Earth Science
The Pamir‒Tian Shan collision zone, located at the northwestern edge of the Himalaya‒Qingzang orogenic belt, provides a natural laboratory for investigating the development of fluvial terraces controlled by regional climate change and tectonic uplift. In
Jinhua Deng, Jinhua Deng, Tao Li, Jiahui Feng, Jiahui Feng, Li Qian   +5 more
doaj   +1 more source

Morphometric analysis of urban fluvial terraces using UAV LiDAR: A case study from the Santa Catarina River, Mexico [PDF]

ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
This study analyzes the geomorphological evolution of fluvial terraces along the urban section of the Santa Catarina River (Nuevo León, México) by integrating high-resolution UAV-based LiDAR and photogrammetry.
M. Pérez Martínez, F. D. Yépez-Rincón, L. E. Arista-Cázares, Y. Z. Antonio-Durán, K. D. Rodríguez-González, H. de León-Gómez, A. L. Ferriño-Fierro, V. H. Guerra-Cobián   +7 more
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SOILS NATURAL FERTILITY OF MADEIRA-RO FLUVIAL PLAIN: A PHYSIC-CHEMISTRY ANALYSIS (CEC, m% E V%) OF THE STRETCH FROM PORTO VELHO-RO TO HUMAITÁ-AM [PDF]

Sociedade & Natureza, 2005
This work evaluates natural soil fertility on plain and flooded terrace areas, at Madeira River-RO fluvial plain, based on physics and chemicals analyses, (pH, OM, Al+2 + H+, exchange bases K+; Ca+2; Mg+2 e Al+3), physic-chemical (CEC, m% and V%), from ...
Tatiane Rodrigues Lima, Dorisvalder Dias Nunes, Joiada Moreira da Silva, Déborah Pereira Linhares, Angelo Mansur Mendes, Danielle Freire Azevedo Silva   +5 more
doaj  

Topography and Substrate Lithology Control the Position of Fluvial Channels on a Drained Lake Floor, the Case of the Postglacial Ain Valley (Eastern France)

Quaternary
The development of fluvial systems over long time scales is a complex interplay of tectonic, climatic, and lithological factors. The initiation and location of fluvial channels in the landscape is less well understood.
Cornelis Kasse, Oeki Verhage
doaj   +1 more source

Soil evolution indices in fluvial terrace chronosequences from central Spain (Tagus and Duero fluvial basins)

Quaternary International, 2015
Soil development in central Spain was studied through analysis of soil chronosequences from Tagus and Duero river valley terrace systems, evolved under similar Mediterranean climatic conditions throughout the Pleistocene. The most complete soil–terrace sequence, representative for our study, developed in the Tagus valley (Aranjuez–Toledo–Talavera ...
Roquero García-Casal, E., Silva, Pablo G., Goy, José Luis, Zazo, Caridad, Massana, Jordi   +4 more
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Quaternary fluvial terraces of the Tiber Valley: geochronologic and geometric constraints on the back-arc magmatism-related uplift in central Italy

Scientific Reports, 2017
Through a geomorphological study relying on statistically assessed classes of hilltop elevations, we reconstruct a suite of paleo-surfaces along the Tiber River Valley north of Rome that we identify as fluvial terraces formed by interplay between global ...
Fabrizio Marra, Fabio Florindo, Carmelo Petronio   +2 more
doaj   +1 more source

GEO-ARKEOLOGI TERAS PURBA BENGAWAN SOLO DI SEKITAR KABUPATEN BOJONEGORO, JAWA TIMUR

Pubawidya: Jurnal Penelitian dan Pengembangan Arkeologi, 2016
The mapping of the existing ancient terrace of Bengawan Solo (Bengawan means big river) is the preliminary geo-archaeological research conducted in several sites in  Bojonegoro region of East Java.
Johan Arif, Harry Nugroho
doaj  

汶川地震河流阶地建筑物的震害机制研究

Dizhen xuebao
2008年汶川MS8.0地震现场的震害调查资料显示，河流阶地地形对建筑物震害分布的影响规律表现为：阶地前缘冲洪积层较厚区域的建筑物遭受了严重的破坏，而阶地后缘坡积层较薄区域受损则相对较轻，总体上呈现出前缘震害显著大于后缘的特征。为研究该震害特征的机制，利用有限差分软件FLAC3D构建三维阶地模型，模拟分析了脉冲荷载作用下阶地模型的地震动响应。结果表明：各级阶地前缘的地震动水平均显著高于后缘，同时随着上覆土层的增厚，峰值加速度、相对持时值、反应谱平台值以及放大系数均呈现上升趋势；随着阶地级数的减小 ...
Wen Xiong, Wei Wang, Yanke Yang, Kaifang Xu, Ningkang Zhao, Zi’ang Cao, Yunsong Li   +6 more
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Gentle Slopes and Fluvial Terraces around Mt. Shokanbetsudake, Hokkaido

Annals of The Tohoku Geographycal Asocciation, 1987
This paper discusses the paleoenvironment of eastern slopes of Mt. Shokanbetsudake, Hokkaido, on the basis of evidences of gentle slopes and fluvial terraces.The fluvial terraces are classified into five surfaces (terrace I to V in descending order) and the gentle slopes into two surfaces (gentle slope I and II). In most case, gentle slope I and gentle
openaire   +2 more sources