Dam Deformation Monitoring using Cloud-Based P-SBAS Algorithm: The Kramis Dam Case (Algeria)

This paper presents the application of the Parallel Small Baseline Subset (P-SBAS) algorithm, provided by the Geohazards Exploitation Platform for the precise monitoring of an earth dam's ground deformation using C-band Sentinel-1 data. The test site object of this study was the Kramis dam, located in the Mostaganem State, Western Algeria. Among the multiple advanced DInSAR techniques, SBAS is very adequate for long-term displacement monitoring in areas with changing terrain and vegetation. Ten corner reflectors were installed as a backscattered radar signal amplification tool to reduce the effect of temporal decorrelation and delineate the dam area. Four Sentinel-1 A and B satellite tracks were available (T30, T37, T103, and T110) to measure displacements, in the Line of Site (LoS) direction, for two years since the installation of the CRs in July 2019. The results showed a subsiding area on the left bank of the dam dike, with a velocity of 4mm/yr, and an uplifting rate of 3-4mm/yr in the upper part of the dike. The entire 3-dimensional vector of displacement of the dam vicinity was estimated using the least-squares method, proving a better understanding of the dam's temporal deformation, particularly for dams with a high exposure factor and associated risk

Spatial distribution and abundance of the Stomatopoda and Decapoda crustaceans sampled by bottom trawl in the gulf of Gabes (Tunisia, Central Mediterranean)

Stomatopoda and Decapoda crustaceans play an important role in the marine ecosystems through varied ecological strategies and bio-disturbance of species' community with an important effect on the benthic communities' structure, in addition to abiotic factors (such as temperature, salinity and type of bottom). Furthermore, faunal inventories are necessary, especially when focused on ecological and economical important groups, such as the Malacostraca class, and concentrated on areas under intense fishery activity such as the gulf of Gabes (Central Mediterranean). Inshore and offshore collections were performed at 30 sites of the Gulf's continental shell (20-260 m depth) in spring 2009, by employing two experimental bottom trawl gears. Overall, 40 species were detected in the samples distributed among Stomatopoda (only one species) and Decapoda (7 Dendrobranchiata, 3 Caridea, 1 Astacidea, 7 Anomura, and 21 Brachyura). In terms of abundance, Stomatopoda contributed for about 14%. The coastal area of the gulf (especially, areas in the North-east of Gabès and North-west of Djerba between 20 and 40 m depth) hosted a high variety of species; the most abundant were Squilla mantis, Paguristes eremite, Inachus dorsettensis and the exotic intruder Trachysalambria palaestinensis.This work was undertaken within the framework of research activities in the “Marine Living Resources” laboratory of the National Institute of Marine Sciences and Technologies (INSTM), financed by the Tunisian Ministry of Agriculture and Fisheries

Abstracts of the First International Conference on Advances in Electrical and Computer Engineering 2023

This book presents extended abstracts of the selected contributions to the First International Conference on Advances in Electrical and Computer Engineering (ICAECE'2023), held on 15-16 May 2023 by the Faculty of Science and Technology, Department of Electrical Engineering, University of Echahid Cheikh Larbi Tebessi, Tebessa-Algeria. ICAECE'2023 was delivered in-person and virtually and was open for researchers, engineers, academics, and industrial professionals from around the world interested in new trends and advances in current topics of Electrical and Computer Engineering. Conference Title: First International Conference on Advances in Electrical and Computer Engineering 2023Conference Acronym: ICAECE'2023Conference Date: 15-16 May 2023Conference Venue: University of Echahid Cheikh Larbi Tebessi, Tebessa-AlgeriaConference Organizer: Faculty of Science and Technology, Department of Electrical Engineering, University of Echahid Cheikh Larbi Tebessi, Tebessa-Algeri