Analyzing ship‐borne acoustic Doppler current profiler measurements to estimate the vertical and spatial distribution of southern Black Sea zooplankton

1999 ◽  
Vol 105 (2) ◽  
pp. 1050-1050 ◽  
Author(s):  
Funda Erkan ◽  
Ali C. Gucu
Keyword(s):  
Spatial Distribution ◽  
Black Sea ◽  
Acoustic Doppler Current Profiler ◽  
Current Profiler

Using a lowered acoustic Doppler current profiler for measuring current velocities in the Black Sea

Oceanology ◽  
2007 ◽  
Vol 47 (1) ◽  
pp. 127-134 ◽  
Author(s):  
D. D. Aleinik ◽  
G. I. Shapiro ◽  
L. D. Mee ◽  
E. M. Lemeshko
Keyword(s):  
Black Sea ◽  
Acoustic Doppler Current Profiler ◽  
The Black Sea ◽  
Current Profiler

scholarly journals Hydroacoustic and Pressure Turbulence Analysis for the Assessment of Fish Presence and Behavior Upstream of a Vertical Trash Rack at a Run-of-River Hydropower Plant

2018 ◽  
Vol 8 (10) ◽  
pp. 1723 ◽  
Author(s):  
Marc Schmidt ◽  
Jeffrey Tuhtan ◽  
Martin Schletterer
Keyword(s):  
Spatial Distribution ◽  
Flow Characteristics ◽  
Acoustic Doppler Current Profiler ◽  
Hydropower Plant ◽  
Hydro Power ◽  
Starting Point ◽  
Current Profiler ◽  
Spatial Estimates ◽  
Flow Turbulence ◽  
Turbulence Analysis

The spatial distribution of fish upstream of a vertical trash rack was investigated at the hydropower plant Kirchbichl in the alpine River Inn (Tyrol, Austria). The objective of the research project “FIDET” was to establish a non-invasive methodology to study fish presence and flow characteristics at large hydro power sites. A new monitoring approach was developed combining hydroacoustic observations of fish locations with multivariate hydrodynamic data. This was accomplished by utilizing complementary observations from multiple underwater sensor technologies: First, an array of echosounders were deployed at a fixed cross-section upstream of the trash rack for long-term monitoring. Afterwards, detailed underwater surveys with “acoustic cameras” (DIDSON and ARIS) revealed that the spatial distributions of fish in front of the trash rack were highly heterogeneous. The spatial distribution of the flow field was assessed via the time-averaged velocity fields from acoustic Doppler current profiler (ADCP). Finally, a custom pressure-based flow turbulence probe was developed, providing spatial estimates of flow turbulence immediately upstream of the trash rack. The significant contribution of this work is to provide a multi-modal monitoring approach incorporating both fish position data and hydrodynamic information. This forms the starting point for a future objective, namely to create an automated, sonar-based detection and control systems to assist and monitor fish protection operations in near real-time.

Klamath River Water Quality and Acoustic Doppler Current Profiler Data from Link River Dam to Keno Dam, 2007

2008 ◽  
Author(s):  
Annett B. Sullivan ◽  
Michael L. Deas ◽  
Jessica Asbill ◽  
Julie D. Kirshtein ◽  
Kenna D. Butler ◽  
...  
Keyword(s):  
Water Quality ◽  
River Water ◽  
Acoustic Doppler Current Profiler ◽  
River Water Quality ◽  
Klamath River ◽  
Current Profiler ◽  
Profiler Data

Influx of streaming methane into anoxic waters of the Black Sea basin

2019 ◽  
Vol 59 (6) ◽  
pp. 952-963
Author(s):  
Yu. G. Artemov ◽  
V. N. Egorov ◽  
S. B. Gulin
Keyword(s):  
Spatial Distribution ◽  
Black Sea ◽  
The Black Sea ◽  
Gas Bubble ◽  
Dissolved Methane ◽  
Anoxic Waters ◽  
Deep Waters ◽  
Methane Budget

Based on data on the spatial distribution and fluxes of streaming (bubbling) methane within the Black Sea, the rate of dissolved methane inflow to Black Sea deep waters was assessed. Calculations showed that gas bubble streams annually replenish the methane budget in the Black Sea by 1.2 109 m3, or 0.9 Tg, which is considerably less than determined by known biogeochemical estimates of components of methane balance in the Black Sea.

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