Results 71 to 80 of about 221,532 (152)

Program of hikes for 1930, Smoky Mountains Hiking Club

open access: yes, 2015
In 1926, the Smoky Mountains Hiking Club began to print an annual handbook that outlined scheduled hikes for each month of the year, including winter. This 1930 handbook was collected by George Masa (1881-1933), a photographer active in the Appalachian ...
Smoky Mountains Hiking Club;
core  

Transponder: Support for Localizing Distressed People through a Flying Drone Network

open access: yesDrones
Context: In Search and Rescue (SAR) operations, the speed and techniques used by rescuers and effective communication with the person in need of rescue are vital for successful operations.
Antonello Calabrò, Eda Marchetti
doaj   +1 more source

Assessment of the impact of dam reservoirs on river ice cover – an example from the Carpathians (central Europe) [PDF]

open access: yesThe Cryosphere
This paper presents a method for determining the impact of dam reservoirs on the ice cover of rivers downstream of their locations based on a long measurement period (1950–2020) and synthetic-aperture radar (SAR) data.
M. Fukś
doaj   +1 more source

Alluvial ridge morphology on avulsing rivers

open access: yesSedimentology, Volume 73, Issue 6, Page 2311-2337, October 2026.
ABSTRACT Alluvial ridges are built by preferential channel‐belt deposition and control river avulsions, yet a systematic analysis of their morphology has been missing. To address this gap, we analyse a globally distributed dataset of 8970 alluvial ridge flanks on 14 different rivers.
James H. Gearon, Douglas A. Edmonds
wiley   +1 more source

Handbook 1931 Smoky Mountains Hiking Club

open access: yes, 2015
In 1926, the Smoky Mountains Hiking Club began to print an annual handbook that outlined scheduled hikes for each month of the year, including winter. This 1931 handbook was collected by George Masa (1881-1933), a photographer active in the Appalachian ...
Smoky Mountains Hiking Club of Knoxville;
core  

Emerging Hotspots of Cropland Expansion on Steeper Tropical Terrains Intensify Tropical Forest Carbon Loss

open access: yesGeophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Tropical deforestation driven by agricultural expansion to meet growing food demand poses a rising threat to the global carbon cycle. While previous studies quantified agriculture‐related carbon losses, the role of cropland expansion remains poorly resolved, partly because widely used agricultural driver data sets are too coarse to detect fine‐
Xiaofeng Yang   +11 more
wiley   +1 more source

Handbook 1932 Smoky Mountains Hiking Club

open access: yes, 2015
In 1926, the Smoky Mountains Hiking Club began to print an annual handbook that outlined scheduled hikes for each month of the year, including winter. This 1932 handbook was collected by George Masa (1881-1933), a photographer active in the Appalachian ...
Smoky Mountains Hiking Club of Knoxville;
core  

First Empirical Assessment of Ice Content From a Himalayan Rock Glacier

open access: yesGeophysical Research Letters, Volume 53, Issue 17, 16 September 2026.
Abstract Climate warming and degradation of glaciers and permafrost in High Mountain Asia is threatening the sustainability of the region's natural “water towers” and allied ecosystems and infrastructure. Approximately 25,000 Himalayan rock glaciers exist and, being more resilient to climatic change than glaciers, they represent important freshwater ...
Matthew W. Peacey   +7 more
wiley   +1 more source

A SAR Observation and Numerical Study on Ocean Surface Imprints of Atmospheric Vortex Streets

open access: yesSensors, 2008
The sea surface imprints of Atmospheric Vortex Street (AVS) off Aleutian Volcanic Islands, Alaska were observed in two RADARSAT-1 Synthetic Aperture Radar (SAR) images separated by about 11 hours.
William G. Pichel   +3 more
doaj  

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