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| Marsset, Bruno; Menut, Eric; Ker, Stephan; Thomas, Yannick; Regnault, Jean-pierre; Leon, Pierre; Martinossi, Henri; Artzner, Laurent; Chenot, Damien; Dentrecolas, Stephane; Spychalski, B.; Mellier, G.; Sultan, Nabil. |
| High Resolution (220–1050 Hz) seismic acquisition performed in deep water using deep-towed systems provides unrivalled lateral resolution when compared to conventional surface seismic. The lateral resolution of these acquisitions is controlled by the width of the first Fresnel zone, taking advantage of their positions close to the sea bottom. No current existing deep towed equipment can benefit from seismic imaging processing techniques to improve this resolution as a consequence of positioning inaccuracies. The technological developments of a digital deep-towed multichannel streamer are presented with a particular attention to positioning: each hydrophone incorporates a pitch, roll and heading sensor in order to monitor the constant deformation of the... |
| Tipo: Text |
Palavras-chave: Deep-towed seismics; Multichannel streamer; Seismic imaging. |
| Ano: 2014 |
URL: https://archimer.ifremer.fr/doc/00206/31745/35690.pdf |
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| Artzner, Laurent. |
| The ESSHROV2020 technology campaign was scheduled from November 27 to December 07, 2020 on the N / O Europe. It is broken down into 2 legacies, the first in the deep sea configuration and the new intervention skid, the second in the low background configuration and the Cartography skid. With a total of 5 dives out of the 8 planned (3 dives canceled for weather reasons), it enabled the following objectives to be achieved: 1. Validation of the operation of the new INTERVENTION SKID 2. Validation of the "LOW SUBSTANCE" mode of intervention Ensuring the reliability of the system 3. Confirmation of the minimum immersion in Shallow water configuration 4. Validation of the spare 7-axis arm 5. Validation and comparison with the SMF of the 90 ° and 45 °... |
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| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00668/78002/80240.pdf |
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| Fabri, Marie-claire; Noel, Philippe; Ciausu, Viorel; Artzner, Laurent. |
| Ce document s'intéresse à la charge utile "Prélèvement". Il est réalisé avec l'objectif d'informer le groupe de travail scientifique du H-ROV de l'avancement des décisions qui ont été prises par les ingénieurs de développement et qui influent sur les équipements de prélèvement futurs (tels que le volume et la forme du panier, la capacité d'emport, etc.). Il propose un bilan des différentes charges utiles existantes et embarquables sur un engin sous-marin, ainsi que leurs évolutions possibles et/ou nécessaires. |
| Tipo: Text |
Palavras-chave: H-ROV; Prélèvements. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00232/34374/32747.pdf |
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