Results 61 to 70 of about 40,059 (253)

The planktonic food web in the Gulf of Naples based on the analysis of carbon and nitrogen stable isotope ratios

Marine Ecology, EarlyView., 2023
Abstract Plankton play a key role in marine food webs by producing and transferring organic matter and energy to higher trophic levels. To define the trophic structure and interactions within the planktonic communities in the Gulf of Naples, we determined carbon and nitrogen stable isotope ratios in particulate organic matter (POM, <20 μm ...
Louise Merquiol, Maria Grazia Mazzocchi, Isabella D'Ambra   +2 more
wiley   +1 more source

Satellite remote sensing and bathymetry co-driven deep neural network for coral reef shallow water benthic habitat classification

International Journal of Applied Earth Observations and Geoinformation
Shallow-water benthic habitat classification of coral reefs based on satellite remote sensing is an important part of coral reef monitoring. Leveraging its potent capacity for feature learning, and generalization, deep learning emerges as a robust method
Hui Chen, Jian Cheng, Xiaoguang Ruan, Jizhe Li, Li Ye, Sensen Chu, Liang Cheng, Ka Zhang   +7 more
doaj   +1 more source

River Ice Processes Modelling: A Comprehensive Review

River Research and Applications, EarlyView.
ABSTRACT River ice strongly influences hydrology, hydrodynamics, and ecosystems in cold regions, with an impact on flooding, hydropower generation, navigation, and aquatic habitats. Modeling river ice processes is therefore essential for both scientific understanding and operational management.
Harusha Abeynayake, Heli Yu, Epari Ritesh Patro, Ali Torabi Haghighi   +3 more
wiley   +1 more source

Galveston Bay oyster maps. Texas City to Eagle Point; bathymetry and reefs

, 1992
1 map; 61 x 84 cmThe Galveston Bay Oyster Map series is a collection of maps corresponding to the report: The Status of Oyster Reefs in Galveston Bay, Texas by Eric N. Powell, Jungguen Song, and Matthew Ellis (refer to Accession #7014).
Simons, J.D., Powell, E.N., Lawrie, S., Song, J., Ellis, M.S.   +4 more
core   +2 more sources

Review : Bathymetry Mapping Using Underwater Acoustic Technology

JGEET: Journal of Geoscience, Engineering, Environment and Technology, 2019
The bathymetry mapping using underwater acoustic technology very important in Indonesia waters. Bathymetry is the result of measuring the height of the seabed so that the bathymetric map provides information about the seabed, where this information can ...
Muhammad Zainuddin Lubis, Sri Pujiyati, Budhi Agung Prasetyo, Tiggi Choanji   +3 more
doaj   +1 more source

Pennell Trough, Ross Sea bathymetry and glacial landforms

, 2021
Bathymetry from multibeam echo sounding data in Pennell Trough, Ross Sea, Antarctica was collected onboard the RVIB Nathaniel B. Palmer (NBP) 15-02 cruise using a Kongsberg EM122 operating in dual swath mode at 12 kHz frequency with a 1°×1° beam width ...
Simkins, Lauren M, Anderson, John B, Greenwood, Sarah L, Prothro, Lindsay O, Munevar Garcia, Santiago, Eareckson, Elizabeth   +5 more
core   +1 more source

IVyTools: Space–Time Image Velocimetry for Streamflow

River Research and Applications, EarlyView.
ABSTRACT Accurate streamflow measurements are essential for hydrologic monitoring, flood forecasting, and water resource management. Traditional in situ methods, although reliable, are often impractical or unsafe during flood conditions or at inaccessible locations. Image velocimetry techniques offer a potential non‐contact alternative, yet operational
Frank L. Engel, Travis M. Knight, Elizabeth A. Nystrom, Christopher B. Grindle   +3 more
wiley   +1 more source

Rhyming in the cold: first evidence of soniferous fishes in the Southern Ocean

Remote Sensing in Ecology and Conservation, EarlyView.
The acoustic ecology of Southern Ocean fishes remains unknown due to a lack of dedicated acoustic research on the fishes of this ocean. Passive acoustic monitoring data were collected at the South African sub‐Antarctic Prince Edward Islands using an underwater acoustic recorder, and towed underwater Ski‐Monkey cameras were deployed to identify fish ...
Fannie W. Shabangu, Grant van der Heever, Charles von der Meden, Hannah Truter, Stephen J. Lamberth, Ofer Gon   +5 more
wiley   +1 more source

Analysis of ICESat‐2 Data Acquisition Algorithm Parameter Enhancements to Improve Worldwide Bathymetric Coverage

Earth and Space Science
A major advance in global bathymetric observation occurred in 2018 with the launch of NASA’s ICESat‐2 satellite, carrying a green‐wavelength, photon‐counting lidar, the Advanced Topographic Laser Altimeter System (ATLAS). Although bathymetric measurement
James T. Dietrich, Ann Rackley Reese, Aimée Gibbons, Lori A. Magruder, Christopher E. Parrish   +4 more
doaj   +1 more source

Confronting turbidity, the major challenge for satellite-derived coastal bathymetry

, 2023
Monitoring the complex seafloor morphology that drives the functioning of shallow coastal ecosystems is vital for assessing marine activities. Satellite-derived bathymetry (SDB) can provide a crucial dataset for creating the bathymetry maps needed to ...
Isabel Caballero, Richard P. Stumpf, Caballero, Isabel, Stumpf, Richard P.   +3 more
core   +1 more source