Results 21 to 30 of about 856,677 (287)

INFORMATION EXTRACTION IN TOMB PIT USING HYPERSPECTRAL DATA [PDF]

open access: yesThe International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2018
Hyperspectral data has characteristics of multiple bands and continuous, large amount of data, redundancy, and non-destructive. These characteristics make it possible to use hyperspectral data to study cultural relics.
X. Yang   +9 more
doaj   +1 more source

Preface: Remote Sensing in Coastal Environments

open access: yesRemote Sensing, 2016
The Special Issue (SI) on “Remote Sensing in Coastal Environments” presents a wide range of articles focusing on a variety of remote sensing models and techniques to address coastal issues and processes ranging for wetlands and water quality to coral ...
Deepak R. Mishra, Richard W. Gould
doaj   +1 more source

Example of Propagation of Underwater Sound by Bottom Reflection [PDF]

open access: yesThe Journal of the Acoustical Society of America, 1948
From data obtained in an extended program for the study of underwater sound propagation, eight examples at 200 c.p.s. have been selected to illustrate long-range propagation involving reflection from the ocean bottom. Essentially continuous sound measurements were made while the sending vessel moved from 100 meters to 60 kilometers or more away from ...
openaire   +1 more source

Silver split nano-tube array as a meta-atomic monolayer for high-reflection band

open access: yesScientific Reports, 2022
In this work, an ultra-thin silver film-coated grating as a split silver nanotube array exhibits not only high TE polarized reflectance as a conventional subwavelength grating but also high TM polarized reflectance that is close to or higher than TE ...
Yi-Jun Jen, Po-Chun Lin, Xing-Hao Lo
doaj   +1 more source

Small-scale spatial variability in bare-ice reflectance at Jamtalferner, Austria [PDF]

open access: yesThe Cryosphere, 2020
As Alpine glaciers become snow-free in summer, more dark, bare ice is exposed, decreasing local albedo and increasing surface melting. To include this feedback mechanism in models of future deglaciation, it is important to understand the processes ...
L. Hartl   +3 more
doaj   +1 more source

Estimating Vertical Distribution of Leaf Water Content within Wheat Canopies after Head Emergence

open access: yesRemote Sensing, 2021
Monitoring vertical profile of leaf water content (LWC) within wheat canopies after head emergence is vital significant for increasing crop yield. However, the estimation of vertical distribution of LWC from remote sensing data is still challenging due ...
Weiping Kong   +6 more
doaj   +1 more source

Mapping Substrate Types and Compositions in Shallow Streams

open access: yesRemote Sensing, 2019
Remote sensing of riverbed compositions could enable advances in hydro-morphological and habitat modeling. Substrate mapping in fluvial systems has not received as much attention as in nearshore, optically shallow inland, and coastal waters.
Milad Niroumand-Jadidi   +2 more
doaj   +1 more source

Satellite-Derived Bottom Depth for Optically Shallow Waters Based on Hydrolight Simulations

open access: yesRemote Sensing, 2022
The bottom depth of coastal benthic habitats plays a vital role in the coastal ecological environment and navigation. In optically shallow waters (OSWs), seafloor reflectance has an impact on the remotely sensed data, and thus, water depth can be ...
Yuxin Wang   +6 more
doaj   +1 more source

4SM: A Novel Self-Calibrated Algebraic Ratio Method for Satellite-Derived Bathymetry and Water Column Correction

open access: yesSensors, 2017
All empirical water column correction methods have consistently been reported to require existing depth sounding data for the purpose of calibrating a simple depth retrieval model; they yield poor results over very bright or very dark bottoms.
Yann G. Morel, Fabio Favoretto
doaj   +1 more source

Global Chlorophyll Concentration Distribution and Effects on Bottom Reflectance of Coral Reefs

open access: yesOceans
Despite the limited coverage of coral reefs in the world’s oceans, they play a crucial role in global marine biodiversity and providing essential ecosystem services.
Ana G. Bonelli   +3 more
doaj   +1 more source

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