Results 21 to 30 of about 3,647,086 (349)

Direct Observation of Nanoplastics in Ocean Water

, 2023
Plastic production surpasses all other synthetic materials globally, with 5-13 million tons of them entering the oceans every year, posing serious environmental challenges.
Qiushi, Zhang, Tengfei, Luo, Leisha, Martin, Seunghyun, Moon, Seongmin, Kim, Wei, Xu   +5 more
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Satellite Doppler Observations for the Motions of the Oceans [PDF]

Bulletin of the American Meteorological Society, 2019
not required. (Capsule Summary) Workshop on Doppler Oceanography from Space. What: This workshop brought together oceanographers and radar experts to discuss how new radar technology can be used in existing and future satellite missions to directly measure the motions at the ocean surface, namely currents and waves, and their relation to ocean vector ...
Ardhuin, Fabrice, Chapron, Bertrand, Maes, Christophe, Romeiser, Roland, Gommenginger, Christine, Cravatte, Sophie, Morrow, Rosemary, Donlon, Craig, Bourrassa, Mark   +8 more
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MPC-Based Collaborative Control of Sail and Rudder for Unmanned Sailboat

Journal of Marine Science and Engineering, 2023
In the traditional motion control method of an unmanned sailboat, the sail and rudder are divided into two independent controllers. The sail is used to obtain the thrust and the rudder is used to adjust the yaw angle.
Shuo Liu, Zijing Yu, Tao Wang, Yifan Chen, Yu Zhang, Yong Cai   +5 more
doaj   +1 more source

A Plankton Detection Method Based on Neural Networks and Digital Holographic Imaging

Chemosensors, 2022
Detecting marine plankton by means of digital holographic microscopy (DHM) has been successfully deployed in recent decades; however, in most previous studies, the identification of the position, shape, and size of plankton has been neglected, which may ...
Kaiqi Lang, Hui Cai, Xiaoping Wang
doaj   +1 more source

Estimates of the Southern Ocean general circulation improved by animal-borne instruments [PDF]

, 2013
Over the last decade, several hundred seals have been equipped with conductivity-temperature-depth (CTD) sensors in the Southern Ocean for both biological and physical oceanographic studies.
McIntyre, Trevor, Lydersen, C, Horst Bornemann, Bester, Marthan N., Hindell, Mark A., Hindell, M, Boehme, Lars, Costa, Daniel P., Gael Forget, Lydersen, Christian, Nost, Ole A., Huckstadt, Luis A., Kovacs, K M, Hindell, M.A., Roquet, F, Marthan N. Bester, Nicholls, K W, Lars Boehme, Biuw, Martin, Patrick Heimbach, Forget, G, Field, I, Kit M. Kovacs, Harcourt, Robert, Field, I.C., Muelbert, Monica M.C., Wunsch, Carl, Heimbach, Patrick, Bornemann, H, McMahon, Clive R., Reverdin, G, Christophe Guinet, Luis A. Huckstadt, Nøst, O. A., Bailleul, F., Heimbach, P, Fedak, Mike, Bester, Marthan Nieuwoudt, Biuw, M, Kimberly T. Goetz, Kovacs, K. M., Charrassin, J. B., Jean‐Benoit Charrassin, Chafik, L, Robert Harcourt, Muelbert, M.C., Chafik, Leon,, Reverdin, Gilles, Fabien Roquet, Clive R. McMahon, Guy Williams, Joachim Ploetz, Muelbert, Monica C., Bailleul, F, Ploetz, J, Williams, Guy, Biuw, M., Williams, G, McMahon, Clive Reginald, Bailleul, Frederic, Harcourt, Robert G., Nøst, O A, Fedak, Mike A., Martin Biuw, Costa, D P, Muelbert, Mônica M. C., Kovacs, Kit M., Roquet, Fabien, Wunsch, C, Guinet, C, Iain C. Field, Charrassin, Jean-Benoit, Fedak, Michael A., Frederic Bailleul, Christian Lydersen, McMahon, C R, Nicholls, Keith W., Chafik, Leon, Nicholls, K. W., Keith W. Nicholls, Roquet, Fabien,, Goetz, K.T., Bester, M N, McIntyre, T, Leon Chafik, Trevor McIntyre, Monica C. Muelbert, Plötz, Joachim, Muelbert, M C, Harcourt, R, McMahon, C. R., Guinet, Christophe, Field, Iain C., Hückstädt, L.A., Kovacs, Kit M., 1956-, Mike A. Fedak, Charrassin, J-B, Goetz, K T, Mark A. Hindell, Carl Wunsch, Chafik, L., Lydersen, C., Williams, G., Huckstadt, L A, Harcourt, R., Daniel P. Costa, Goetz, Kimberly T., Williams, Guy Darvall, Gilles Reverdin, Bornemann, Horst, Nøst, Ole A., Ole A. Nøst, Ploetz, Joachim, Costa, D.P., Forget, Gael   +114 more
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Sea surface salinity and the ocean structure in the tropical Indian Ocean

, 2020
The variability of the tropical Indian Ocean (TIO) is crucial to the global water cycle and heat transportation. At the seasonal time scale, the variability of the TIO is closely related to the monsoon circulation.
yuan, X (Faculty of Geo-Information Science and Earth Observation (ITC), University of Twente)
core   +1 more source

Challenge 1: Sustained & integrated ocean observation

, 2021
16 pages, 1 figureSustained and integrated ocean observations are vital to establish the ocean state and variability, to understand the ocean’s role in climate change.
Casas, Benjamín, Pelegrí, Josep Lluís, Sorribas, Jordi, López, Cristóbal, Portabella, Marcos, Piera, Jaume, Navarro, Gabriel, Turiel, Antonio, Pascual, Ananda, Ruiz, Simón, Simarro, Gonzalo, Tintoré, Joaquín, Orfila, Alejandro, Pérez, Fiz F., Dañobeitia, Juan José, Peters, Francesc, García-Ladona, Emilio, Ballabrera-Poy, Joaquim, Isern-Fontanet, Jordi, Talone, Marco, Mourre, Baptiste, Bartolomé, Rafael   +21 more
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Sustaining observations in the polar oceans [PDF]

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2014
Abstract Polar oceans present a unique set of challenges to sustained observations. Sea ice cover restricts navigation for ships and autonomous measurement platforms alike, and icebergs present a hazard to instruments deployed in the upper ocean and in shelf seas.
openaire   +3 more sources

Ocean observing systems demystified

OCEANS 2009, 2009
An ocean observing system could be defined as a set of independent elements that interact to form a whole for the purpose of observing ocean data. But, what is a system? Is a sensor a system? Is a buoy a system? Is a collection of stations a system?
Bermudez, Luis, Delory, Eric, O'Reilly, T.C., Río Fernández, Joaquín del   +3 more
openaire   +2 more sources

Delay and Queue Aware Adaptive Scheduling- Based MAC Protocol for Underwater Acoustic Sensor Networks

IEEE Access, 2019
This paper mainly investigates the application of underwater acoustic sensor networks (UASNs), which are characterized by large-scale, sparse distribution, and varying traffic loads.
Xiaoxiao Zhuo, Fengzhong Qu, Hong Yang, Yan Wei, Yezhou Wu, Jianghui Li   +5 more
doaj   +1 more source