Very high-resolution seismo-acoustic imaging of seagrass meadows (Mediterranean Sea): Implications for carbon sink estimates

2008 ◽  
Vol 35 (18) ◽  
Author(s):  
Claudio Lo Iacono ◽  
Miguel Angel Mateo ◽  
Eulàlia Gràcia ◽  
Lluis Guasch ◽  
Ramon Carbonell ◽  
...  
Keyword(s):  
High Resolution ◽  
Mediterranean Sea ◽  
Carbon Sink ◽  
Acoustic Imaging ◽  
Seagrass Meadows ◽  
Very High

Sizing the carbon sink associated with Posidonia oceanica seagrass meadows using very high-resolution seismic reflection imaging

2021 ◽  
pp. 105415
Author(s):  
Briac MONNIER ◽  
Gérard PERGENT ◽  
Miguel Ángel MATEO ◽  
Ramon CARBONELL ◽  
Philippe CLABAUT ◽  
...  
Keyword(s):  
High Resolution ◽  
Seismic Reflection ◽  
Carbon Sink ◽  
Posidonia Oceanica ◽  
Seagrass Meadows ◽  
Reflection Imaging ◽  
Very High

scholarly journals PROTEVS-MED field experiments: very high resolution hydrographic surveys in the Western Mediterranean Sea

2020 ◽  
Vol 12 (1) ◽  
pp. 441-456
Author(s):  
Pierre Garreau ◽  
Franck Dumas ◽  
Stéphanie Louazel ◽  
Stéphanie Correard ◽  
Solenn Fercocq ◽  
...  
Keyword(s):  
High Resolution ◽  
Mediterranean Sea ◽  
Field Experiments ◽  
Acoustic Doppler Current Profiler ◽  
Free Fall ◽  
Theoretical Work ◽  
Western Mediterranean ◽  
Surface Salinity ◽  
Western Mediterranean Basin ◽  
Very High

Abstract. From 2015 to 2018 four field experiments (seven legs) were performed in the Western Mediterranean basin during winter or early spring. The main objectives were the assessment of high-resolution modeling and the observation of mesoscale structure and associated ageostrophic dynamics. Thanks to the intensive use of a towed vehicle undulating in the upper oceanic layer between 0 and 400 m depth (SeaSoar), a large number of very high resolution hydrographic transects (total length about 10 000 km) were measured, observing mesoscale dynamics (slope current and its instabilities, anticyclonic eddies, submesoscale coherent vortices, frontal dynamics, convection events, strait outflows) and submesoscale processes like stirring, mixed-layer or symmetric instabilities. When available, the data were completed with velocities recorded by a vessel-mounted acoustic Doppler current profiler (VMADCP) and by surface salinity and temperature recorded by a thermosalinograph (TSG). Classical full-depth CTD (conductivity, temperature, depth) stations were also used, providing the background hydrography of the deeper layers when focusing on peculiar structures. In 2017, a free-fall profiler (MVP-200; MVP – moving vessel profiler) was deployed to manage even higher horizontal resolutions. In 2018, another free-fall profiler (a rapidCAST) was tested. When available, biological sensors (chlorophyll a, turbidity, dissolved oxygen, etc.) were used. They provided useful complementary observations about the circulation. This dataset is an unprecedented opportunity to investigate the very fine scale processes, as the Mediterranean Sea is known for its intense and contrasting dynamics. It should be useful for modellers (who reduce the grid size below a few hundred meters) and should properly resolve finer-scale dynamics. Likewise, theoretical work could also be illustrated by in situ evidence embedded in this dataset. The data are available through the SEANOE repository at: https://doi.org/10.17882/62352 (Dumas et al., 2018).

scholarly journals PROTEVS-MED field experiments: Very High-Resolution Hydrographic Surveys in the Western Mediterranean Sea

2019 ◽  
Author(s):  
Pierre Garreau ◽  
Franck Dumas ◽  
Stéphanie Louazel ◽  
Stéphanie Correard ◽  
Solenn Fercocq ◽  
...  
Keyword(s):  
High Resolution ◽  
Mediterranean Sea ◽  
Field Experiments ◽  
Theoretical Work ◽  
Horizontal Resolution ◽  
Western Mediterranean ◽  
Surface Salinity ◽  
Data Set ◽  
Western Mediterranean Basin ◽  
Very High

Abstract. From 2015 to 2018 four field experiments (7 legs) have been performed in the Western Mediterranean Basin during winter or early spring. The main objectives were the assessment of high-resolution modelling, the observation of mesoscale structure and associated ageostrophic dynamics. Thanks to the intensive use of a towed vehicle undulating in the upper oceanic layer between 0 and 400 meter depth (a SeaSoar), a large amount of very high resolution hydrographic transects (about 10.000 km) have been performed, observing mesoscale dynamics (slope current and its instabilities, anticyclonic eddies, sub-mesoscale coherent vortices, frontal dynamics convection events, strait outflows) and sub-mesoscale processes like stirring, mixed layer or symmetric instabilities. When available, the data were completed with velocities recorded by Vessel Mounted Acoustic Doppler Current Profiler (VMADCP) and by surface salinity and temperature recorded by ThermosalinoGraph (TSG). CTD casts have also been performed giving the background hydrography of the deeper layers when focusing on peculiar objects. In 2017, a free fall profiler (an MVP-200) has been deployed to manage even higher horizontal resolution. The aim of the survey was the dynamics and attention were paid to temperature, salinity and currents. Nevertheless, biological sensors (Chlorophyll a, Turbidity, Dissolved Oxygen etc.) have been opportunely carried out as they are able to provide complementary observations about the circulation. This data set is an unprecedented opportunity to investigate the very fine scale processes as the Mediterranean Sea is known for its intense and contrasted dynamics. It should be useful for modellers (who reduce the grid size below a few hundred meters) and expect to properly catch finer scale dynamics. Likewise, theoretical work could also be illustrated by in situ evidence embedded in this data set. The data are available through SEANOE repository (https://doi.org/10.17882/62352; Dumas et al., 2018).

Very High Resolution Analysis of the Dynamics of a Coronal Plasmoid

1994 ◽  
Vol 144 ◽  
pp. 593-596
Author(s):  
O. Bouchard ◽  
S. Koutchmy ◽  
L. November ◽  
J.-C. Vial ◽  
J. B. Zirker
Keyword(s):  
High Resolution ◽  
Solar Eclipse ◽  
Total Solar Eclipse ◽  
Field Of View ◽  
Small Field ◽  
High Resolution Analysis ◽  
Ccd Observations ◽  
Resolution Analysis ◽  
Very High ◽  
Small Field Of View

AbstractWe present the results of the analysis of a movie taken over a small field of view in the intermediate corona at a spatial resolution of 0.5“, a temporal resolution of 1 s and a spectral passband of 7 nm. These CCD observations were made at the prime focus of the 3.6 m aperture CFHT telescope during the 1991 total solar eclipse.

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