Results 71 to 80 of about 167,660 (303)

Repeating Nuclear Transients From Repeating Partial Tidal Disruption Events

Astronomische Nachrichten, EarlyView.
ABSTRACT Extragalactic nuclear transients that exhibit repeating outbursts can be modeled as the repeated dynamical interaction between bound stars and supermassive black holes (SMBHs). A subset of these transients, with recurrence timescales of months‐to‐years, have been explained as accretion flares from the repeated tidal stripping of a star by an ...
Ananya Bandopadhyay, Eric R. Coughlin, Julia Fancher, C. J. Nixon, Dheeraj R. Pasham   +4 more
wiley   +1 more source

Characteristics of Spring Sea Surface Currents near the Pearl River Estuary Observed by a Three-Station High-Frequency Surface Wave Radar System

Remote Sensing
The processes of ocean dynamics are complex near the Pearl River Estuary and are not clear due to a lack of abundant observations. The spatial characteristics of the spring sea surface currents in the adjacent waters of the Pearl River Estuary were ...
Haoyue Li, Lin Zhang, Daosheng Wang, Lin Mu   +3 more
doaj   +1 more source

Quantifying the Impact of Relativistic Precession on Tidal Disruption Event Light Curves

Astronomische Nachrichten, EarlyView.
ABSTRACT The tidal field of a black hole can turn a star into a gas stream whose orbit can precess, especially if the a black hole is rapidly spinning. In this work, we investigate the impact of precession on the light curves of tidal disruption events (TDE).
Diego Calderón, Ondřej Pejcha, Brian D. Metzger, Paul C. Duffell, Stephan Rosswog   +4 more
wiley   +1 more source

Maximum Torque Per Ampere Control Strategy of a 5-phase PM Generator in healthy and faulty modes for tidal marine turbine application [PDF]

, 2014
The work presented in this paper aims to propose a control strategy being able to extract efficiently energy from a fixed-pitch marine current turbine associated with a 5–phase Permanent Magnet Synchronous Generator (PMSG) in healthy mode and in faulty ...
CHARPENTIER, Jean-Frederic, FALL, Ousmane, LETELLIER, Paul, NGUYEN, Ngac Ky   +3 more
core   +4 more sources

Variability of Internally Generated Turbulence in an Estuary, from 100 Days of Continuous Observations [PDF]

, 2009
We present detailed observations of internally generated turbulence in a sheared, stratified natural flow, as well as an analysis of the external factors leading to its generation and temporal variability.
Orton, P. M., Visbeck, Martin
core   +1 more source

A review of the historic and present ecological role of aquatic and shoreline wood, from forest to deep sea

Biological Reviews, EarlyView.
ABSTRACT The ecology of forests, their losses, and terrestrial wood decomposition dynamics have been intensively studied and reviewed. In the aquatic realm, reviews have concentrated on large wood (LW) in rivers and the transition from freshwater to marine environments in the Pacific Northwest of North America. However, a comprehensive global synthesis
Jon Dickson, Ellen Wohl, Laura L. Govers, Oscar Franken, Tjeerd J. Bouma, Han Olff, Britas Klemens Eriksson, Maryann S. Watson, Luísa M.S. Borges, Tjisse van der Heide   +9 more
wiley   +1 more source

Tidal Current Energy Assessment and Exploitation Recommendations for Semi-Enclosed Bay Straits: A Case Study on the Bohai Strait, China

Energies
Against the backdrop of increasingly depleted global non-renewable resources, research on renewable energy has become urgently critical. As a significant marine clean energy source, tidal current energy has attracted growing scholarly interest ...
Yuze Song, Pengcheng Ma, Zikang Li, Yilin Zhai, Dan Li, Hongyuan Shi, Chao Li   +6 more
doaj   +1 more source

Experimental Validation of a Marine Current Turbine Simulator: Application to a Permanent Magnet Synchronous Generator-Based System Second-Order Sliding Mode Control [PDF]

, 2014
This paper deals with the experimental validation of a Matlab-Simulink simulation tool of marine current turbine (MCT) systems. The developed simulator is intended to be used as a sizing and site evaluation tool for MCT installations.
AHMED-ALI, Tarek, BENBOUZID, Mohamed, BENELGHALI, Seifeddine, CHARPENTIER, Jean-Frederic, MANTEANU, Julian   +4 more
core   +2 more sources

Research Progress in Tidal Current Energy Power Generation Device [PDF]

Advances in Engineering Research, 2015
Energy shortage and environment pollutes aggravate ceaselessly all over the world. As a green clean pollution-free renewable energy, tidal current energy has characteristics such as large reserves, wide distribution, predictability, little environmental pollution, etc.
Haoyang Lu, Yongding Wang
openaire   +1 more source

Shaping research in marine functional connectivity for integrated and effective marine science and management

Biological Reviews, EarlyView.
ABSTRACT Effective knowledge of ecological connectivity at sea and at the land–sea interface is key to supporting global policy goals to conserve and restore ocean biodiversity and function. However, a persistent lack of commonality in terminology and understanding around the concept of connectivity in marine ecological studies hampers its integration ...
Audrey M. Darnaude, Susanne E. Tanner, Andreu Blanco, Anna M. Sturrock, Yael Teff Seker, Angel Pérez‐Ruzafa, Jonne Kotta, Tamar Guy‐Haim, Francisco R. Barboza, Manuel Hidalgo, Katell Guizien, Jerneja Penca, Lucía López‐López, Maria Beger, Federica Costantini, Sophie Arnaud‐Haond, Cynthia Riginos, Kris Hostens, Gil Rilov, Stelios Katsanevakis, Ewan Hunter   +20 more
wiley   +1 more source