Reconstruction of paleoglacial equilibrium-line altitudes during the Last Glacial Maximum in the Diancang Massif, Northwest Yunnan Province, China

Open Geosciences, Год журнала: 2023, Номер 15(1)

Опубликована: Янв. 1, 2023

Abstract Equilibrium-line altitudes (ELAs) are an important proxy of the fluctuations and mass–balance characteristics glaciers have been widely used to reconstruct regional paleoclimatic conditions. The Diancang Massif, which has experienced well-known "Tali Glacial Stage" was uplifted during MIS 3b (marine isotope stages). With its unique characteristics, Massif become irreplaceable area for study inland paleo-environmental changes in China. Nevertheless, despite considerable amount glaciological studies on this area, a detailed systematic estimation paleoglacial ELAs Last Maximum remains be performed. In study, several approaches employed estimate basis previous studies. results compared analyzed, final determined using weighted arithmetic average method. Finally, root mean square error is applied evaluate accuracy results. Moreover, two critical parameters, differences between positive negative effects distance ratio accumulation ablation discussed detail. comprehensive results, estimated north slope “Yuju Peak” south “Longquan 3,773 3,883 m, their median errors 18.73 45.00 respectively. Overall, could systematically scientifically first time, expected provide fundamental data accurate modeling area.

Язык: Английский

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A low-cost UAV survey can unravel Baird's Tapir (Tapirus bairdii) trail network dynamics in a neotropical highland forest

Ecological Informatics, Год журнала: 2024, Номер 82, С. 102764 - 102764

Опубликована: Авг. 10, 2024

UAV technology has transformed spatial data collection and high-spatial resolution analysis of diverse environments around the world. Its role within geosciences, ecology, engineering, other sciences been increasing withing last decade. In ecological geomorphological aspects, it offers a powerful tool for studying landforms, surface processes, vegetation, animal behavior globally. Our study employs high-resolution surveys to analyze Tapirus bairdii trail networks their connection landscape in Costa Rican highland paramo-forest national park. Using DJI Phantom 4 V.2 UAV, we conducted photogrammetric flight over 3.19 ha, producing datasets with 2.99 cm/pixel. These facilitated geostatistical trails, revealing complexity hotspots near lagoons. We investigated lagoon characteristics, finding that finer sediments spatially correspond higher activity. This suggests sediment types lagoons influence navigation, impacting network composition. findings highlight technology's advancing research protected areas, providing insights into ecosystems. Overall, date this is first survey these tropical environments.

Язык: Английский

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Lakes in Costa Rica

World geomorphological landscapes, Год журнала: 2024, Номер unknown, С. 113 - 132

Опубликована: Янв. 1, 2024

Язык: Английский

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Highly Weathered Soil Landscapes of Costa Rica

World geomorphological landscapes, Год журнала: 2024, Номер unknown, С. 431 - 451

Опубликована: Янв. 1, 2024

Язык: Английский

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Geoheritage, Geoconservation, and Geotourism Promotion in Costa Rica

World geomorphological landscapes, Год журнала: 2024, Номер unknown, С. 281 - 293

Опубликована: Янв. 1, 2024

Язык: Английский

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