Results 31 to 40 of about 42,717 (194)

Airborne Fraunhofer Line Discriminator [PDF]

, 1969
Airborne Fraunhofer Line Discriminator enables prospecting for fluorescent materials, hydrography with fluorescent dyes, and plant studies based on fluorescence of chlorophyll.
Gabriel, F. C., Markle, D. A.
core   +1 more source

A pilot variational coupled reanalysis based on the CESAM climate model

Quarterly Journal of the Royal Meteorological Society, EarlyView.
Variational data assimilation of in‐situ and satellite ocean data and reanalysis atmospheric data into an intermediate complexity Earth system model is possible by adjusting the surface fluxes and internal model parameters. This pilot application requires nearly complete information on the atmospheric state for synchronization.
Armin Köhl, Iuliia Polkova, Guokun Lyu, Frank Lunkeit, Abhirup Banerjee, Silke Schubert, Detlef Stammer   +6 more
wiley   +1 more source

DBnet: A Lightweight Dual-Backbone Target Detection Model Based on Side-Scan Sonar Images

Journal of Marine Science and Engineering
Due to the large number of parameters and high computational complexity of current target detection models, it is challenging to perform fast and accurate target detection in side-scan sonar images under the existing technical conditions, especially in ...
Quanhong Ma, Shaohua Jin, Gang Bian, Yang Cui, Guoqing Liu   +4 more
doaj   +1 more source

A simple method for retrieving significant wave height from Dopplerized X-band radar [PDF]

Ocean Science, 2017
Retrieving spectral wave parameters such as the peak wave direction and wave period from marine radar backscatter intensity is very well developed.
R. Carrasco, M. Streßer, J. Horstmann
doaj   +1 more source

Bias in Peak Flood Discharges: Are Our Bridges and Culverts Undersized?

River Research and Applications, EarlyView.
ABSTRACT Reliable methods for peak discharge predictions at ungaged locations are required for infrastructure design and floodplain management. For decades, a standard practice in the United States has been to utilize US Geological Survey regional regression equations (StreamStats) as a singular method. However, implementation of multiple methods, such
Steven E. Yochum, Tyler Wible
wiley   +1 more source

A Method for Full-Depth Sound Speed Profile Reconstruction Based on Average Sound Speed Extrapolation

Journal of Marine Science and Engineering
The speed of sound in seawater plays a crucial role in determining the accuracy of multibeam bathymetric measurements. In deep-sea multibeam measurements, the challenge of inadequate longitudinal coverage of sound speed profiles arises from variations in
Wei Zhang, Shaohua Jin, Gang Bian, Chengyang Peng, Haixing Xia   +4 more
doaj   +1 more source

GIS Characterization of Beaver Watershed [PDF]

, 1992
Beaver Reservoir watershed is located in Northwest Arkansas including portions of Madison, Washington, Benton, Carroll, Franklin and Crawford counties. This watershed is important to the Northwest Arkansas region because it supplies most of the drinking ...
McKimmey, J. M., Scott, H. D.
core   +2 more sources

Extended Strahler Ordering to Distinguish Mapped River Channels From Overland Flow Pathways and Consistently Compare Digital Networks

River Research and Applications, EarlyView.
ABSTRACT Digital networks are virtual representations of freshwater systems that provide important inputs to, and mapping of, river classifications, simulation models, and quantitative data analyses for policy, planning, and management. Strahler order has often been used to characterize network configuration and as a proxy indicator of river channel ...
Doug Booker, Matt Wilkins, Clare Wilkinson, Rachel Smith   +3 more
wiley   +1 more source

Analyzing the discharge regime of a large tropical river through remote sensing, ground-based climatic data, and modeling [PDF]

, 1996
This study demonstrates the potential for applying passive microwave satellite sensor data to infer the discharge dynamics of large river systems using the main stem Amazon as a test case.
Annette L. Schloss, Arkin, Baumgartner, Bhaskar J. Choudhury, Birkett, Chahine, Charles J. Vörösmarty, Choudhury, Choudhury, Choudhury, Committee on Global Change, Cort J. Willmott, Defense Mapping Agency Aerospace Center (DMAAC), Defense Mapping Agency Aerospace Center (DMAAC), Defense Mapping Agency Aerospace Center (DMAAC), Defense Mapping Agency Aerospace Center (DMAAC), Defense Mapping Agency Aerospace Center (DMAAC), Defense Mapping Agency Aerospace Center (DMAAC), Dickinson, Dümenil, Giddings, Global Runoff Data Centre (GRDC), Imhoff, Koblinsky, Korzoun, Lean, Leeden, Legates, Legates, Meade, Melillo, Mintz, Mintz, Morris, Nepstad, Pierce, Rastetter, Richey, Rodda, Rzóska, Salati, Salati, Scott M. Robeson, Serafini, Shukla, Sioli, Sippel, Sippel, Skole, Timothy J. Dorman, Timothy K. Stearns, Vörösmarty, Vörösmarty, Vörösmarty, Webb, Willmott, Willmott, Willmott, Willmott, Willmott, Willmott   +60 more
core   +2 more sources

A high‐altitude thermal infrared method for estimating moose abundance and demography in Rocky Mountain National Park, USA

Wildlife Biology, EarlyView.
Resource managers require accurate estimates of large herbivore abundance and demography to maintain ecological integrity. Common methods to count these species, including observations from low altitude helicopter flights, may conflict with other protected area management objectives and struggle to produce precise estimates for more cryptic species. To
Hanem G. Abouelezz, N. Thompson Hobbs
wiley   +1 more source