Results 11 to 20 of about 12,890 (241)

Evaluation of the Performance of a Discharge Gauging Station on Tigris River in Baiji, Iraq

Iraqi Geological Journal, 2023
Gauging the discharge of theTigris River in Baiji is very important, as it reflects the final accumulated flows from Mosul Dam, upper and lower Zab tributaries, which send downstream to the control system in Samarra.
Saif Olewi, Sabbar Salih, Faraj Sulaiman   +2 more
doaj   +1 more source

In Situ Radioactivity Measurements and Water Flow Characteristics of a Thermal Spring in Gera Gulf, Lesvos Island, Greece

Journal of Marine Science and Engineering, 2023
In this study, a thermal spring located in the Gulf of Gera (Lesvos Island) is investigated in terms of radiotracers, water flow velocities and acoustic back-scattering properties by in situ observations.
Christos Tsabaris, Vassilis Zervakis, Spyros Saitanis, Dionisis Patiris, Filothei K. Pappa, Antonios Velegrakis, Stylianos Alexakis, Sotirios Kioroglou   +7 more
doaj   +1 more source

Temporal variations of zooplankton biomass in the Ligurian Sea inferred from long time series of ADCP data [PDF]

Ocean Science, 2014
Three years of 300 kHz acoustic doppler current profiler data collected in the central Ligurian Sea are analysed to investigate the variability of the zooplankton biomass and the diel vertical migration in the upper thermocline.
R. Bozzano, E. Fanelli, S. Pensieri, P. Picco, M. E. Schiano   +4 more
doaj   +1 more source

Comparing the Currents Measured by CARTHE, CODE and SVP Drifters as a Function of Wind and Wave Conditions in the Southwestern Mediterranean Sea

Sensors, 2022
Instruments drifting at the ocean surface are quasi-Lagrangian, that is, they do not follow exactly the near-surface ocean currents. The currents measured by three commonly-used drifters (CARTHE, CODE and SVP) are compared in a wide range of sea state ...
Pierre-Marie Poulain, Luca Centurioni, Tamay Özgökmen   +2 more
doaj   +1 more source

Acoustic Doppler current profiler observations of migration patternsof zooplankton in the Cretan Sea [PDF]

Ocean Science, 2018
The lack of knowledge of the mesopelagic layer inhabitants, especially those performing strong vertical migration, is an acknowledged challenge. This incomplete representation leads to the exclusion of an active carbon and nutrient pathway from the ...
E. Potiris, E. Potiris, C. Frangoulis, A. Kalampokis, M. Ntoumas, M. Pettas, G. Petihakis, V. Zervakis   +7 more
doaj   +1 more source

Challenges with Regard to Unmanned Aerial Systems (UASs) Measurement of River Surface Velocity Using Doppler Radar

Remote Sensing, 2022
Surface velocity is traditionally measured with in situ techniques such as velocity probes (in shallow rivers) or Acoustic Doppler Current Profilers (in deeper water). In the last years, researchers have developed remote sensing techniques, both optical (
Filippo Bandini, Monica Coppo Frías, Jun Liu, Kasparas Simkus, Sofia Karagkiolidou, Peter Bauer-Gottwein   +5 more
doaj   +1 more source

Surveying the upper Ocean with the Ocean Surveyor - a new Phased Array Doppler Current Profiler [PDF]

, 2003
A new shipboard current profiler, a 75-kHz ocean surveyor, was operationally used during two research cruises in the tropical Atlantic and the subpolar North Atlantic, respectively. Here, a report is presented on the first experience with this instrument
Brandt, Peter, Dengler, Marcus, Fischer, Jürgen, Müller, Mario, Symonds, D.   +4 more
core   +5 more sources

Continuous measurements of discharge from a horizontal acoustic Doppler current profiler in a tidal river [PDF]

, 2009
Acoustic Doppler current profilers (ADCPs) can be mounted horizontally at a river bank, yielding single-depth horizontal array observations of velocity across the river.
Buschman, F.A., Hoitink, A.J.F., Vermeulen, B.   +2 more
core   +2 more sources

Resolving velocity ambiguity of two coded pulse in broad-band acoustic Doppler current profiler [PDF]

MATEC Web of Conferences, 2019
Broad-band Acoustic Doppler Current Profiler (BBADCP) adopts short-sequence coded pulse to measure high velocity. Short-sequence coded pulse has large measurable velocity, so it is not easy to have velocity ambiguity.
Zhang Weixuan, Wang Changhong, Deng Kai
doaj   +1 more source

Identifikasi Arus Pasang Surut di Perairan Kemujan, Karimunjawa Berdasarkan Data Pengukuran Acoustic Doppler Current Profiler

Jurnal Kelautan Tropis, 2021
Ocean currents are dynamic hydro-oceanographic parameters which is play an important role in the transport of nutrients, larvae, sediment, and so on. Therefore, the identification of ocean currents including velocity, direction, sea level and the type of
Elis Indrayanti, Denny Nugroho Sugianto, Purwanto Purwanto, Hendry Syahputra Ropinus Siagian   +3 more
doaj   +1 more source