cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17882/93014
title: Recorded data with EM2040 MBES, EK80 SBES and Aquascat system during the BSinFlume feasibility experiment in the Delta Flume, Deltares, Netherlands in 2020.

description: Multifrequency single- and multibeam echosounders are mature technologies for underwater mapping. However, the current scarcity of sediment reference datasets of both bottom backscatter angular response and water column scattering, hampers the generation of applicable information. Reference data derived from measurements in a controlled environment should optimize the use of empirical backscatter data for underwater observation and management. In order to prepare for such comprehensive and ground-breaking experiments, we conducted a feasibility experiment in the Delta Flume, Deltares, Netherlands. Multi-frequency single- and multibeam echosounder data of the flume floor and of fine-grained, in-water sand plumes were recorded. The results revealed that flume reverberation did not interfere significantly with bottom targets and that fine-sand plumes in the water column were clearly detected. Future comprehensive experiments will feature multi-frequency multi-angle measurements on a variety of sediment types, shell densities, interface roughnessess, and plumes of various sediment grain sizes, shapes and concentrations.
DOI: 10.17882/92900
title: Current at Eastern margin of the Strait of Gibraltar | Oct 1995 - Mar 1998

description: Point-wise currentmeter collected at the eastern margin of the Strait of Gibraltar in the frame of the CANIGO project during years 1995 - 1998. Three different location are represented, at north (N), center (C1, C2) and south (S) along a cross section east of Tarifa. In each station data come from a different number (5 to 7) of fixed Anderaa current meters, grouped in four different zip files. Data consist in nx7 matrices, where the 7 fields are time (Matlab serial format), temperature (ºC), salinity (ppm), zonal and meridional current (cm/s), Potential density anomaly (kg/m3) and depth (m - positive downwards).
DOI: 10.17882/92898
title: Current profiles at Camarinal Sill (Strait of Gibraltar) | Aug 2020 - May 2021

description: 3D current profiles collected at the Camarinal Sill (Strait of Gibraltar), by the Physical Oceanography Group of the University of Málaga (Spain), and the Spanish Oceanographic Institute (IEO-CSIC) of Cádiz. The current profiler is an RDI Longrange Workhorse (75 kHz) embedded in a subsurface buoy, deployed 11m above the bottom, in uplooking configuration. The ADCP has been configured with 6m bins thickness and 30min sampling interval. Dataset contains information on the two horizontal and the vertical components of current speed, and the attitude and pressure sensors.
DOI: 10.17882/92844
title: Zooplankton Data and parameters from Fromvar Samples

description: Data set used in https://doi.org/10.1016/j.jmarsys.2011.11.025 Plankton net : Vertical WP2 (200µm, aperture O.25 m2). Geographical Positions, time and the depth of net profils are indicated in the csv file. Zooplankton samples were processes by using Zoooscan and next validated with zooprocess. Two fractions ("_a" and "_b") were made for each sample. Validated images are provided with their pid files (*tar file). Parameters (ESD for Equivalent spherical Diameter per cluster, slope of the NBSS - Normalized Biomass Size spectrum, number of images per zooplankton group...) are also provided in the CSV file. All processing details are provided in the related publication.
DOI: 10.17882/92820
title: Hydrodynamic dataset from the UPCAST and CASSISED campaigns in the Cassidaigne canyon (NW Mediterranean Sea)

description: In the Gulf of Lions, Northwestern Mediterranean Sea, the Cassidaigne submarine canyon is located in an active circulation area. Water movements are modulated both by westerly and easterly winds and by the Northern Current's mesoscale structures. The Cassidaigne canyon interacts with the general circulation inducing locally complex hydrodynamic processes. In 2017 and 2019, two oceanographic cruises were carried out in the Cassidaigne canyon area to gather current and temperature data. 2 ADCPs were moored on the shelf at 100 m depth around the canyon head, and 3 ADCPs were moored along the canyon axis from its head at 400 m depth to the base of the continental slope at 1900 m depth. STBD turbidimeters were moored in the canyon head and gorge to quantify sediment transport in the canyon. In addition, three Mastodon-2d thermistor lines were moored around the canyon head. Current measurements revealed a local circulation modulated by the morphology of the canyon depending on the stratification. Cross-canyon currents were recorded during Northern Current intrusion events. Temperature measurements revealed the generation of upwelling events under strong westerly winds. Near the bottom, these in-situ measurements revealed turbidity currents related to the canyon internal hydrodynamics.
DOI: 10.17882/92735
title: Projected ocean carbon cycle and ocean acificiation for given temperature targets from Bern3D-LPX simulations with the AERA

description: The files provide the model output from Bern3D-LPX forced with the Adaptive Emission Reduction Approach (AERA) that are presented in Terhaar et al. (2023). The AERA (Terhaar et al., 2022) allows to develop time series of CO2 forcing equivalent emissions that allow the global warming to converge to a given temperature target. This dataset includes output from all scenarios presented in Terhaar et al. (2023): 'baseline', 'high-CO2', and 'constant aerosols'. Globally averaged time-series are provided from 1765 to 2020 and from 2021 to 2300 (for all three scenarios): - Temperature anomaly (°C) - CO2 emissions (Pg C yr-1) - CO2-fe emissions (Pg C yr-1) - Atmospheric CO2 (ppm) - Ocean carbon uptake (Pg C yr-1) - Cumulative ocean carbon uptake (Pg C) - Surface ocean pH - Volume of waters (106 km3) with aragonite saturation states below 1, between 1 and 2, between 2 and 3, and above 3 (for the entire ocean and for the first 126 m only). The mean of the simulations with ECS=3.2°C and the range across all ECSs are provided for each year (as shown in the Figures in Terhaar et al. (2023)).
DOI: 10.17882/92691
title: Spindrift 2 Sails of Change : sailboat ocean data from Jules Verne Trophy

description: Data collected by the Spindrift 2 Sails of Change vessel during its attempt at the round-the-world sailing record, the Jules Verne Trophy. More information at https://spindrift-racing.com/fr/.
DOI: 10.17882/92399
title: Underway fugacity of CO2 in the Eastern Tropical Atlantic in 2022

description: The fugacity of CO2 (fCO2) was measured underway during the PIRATA FR-32 cruise in the Eastern Tropical Atlantic using an infrared detection technique.
DOI: 10.17882/92236
title: Moored current and temperature measurements in a submarine canyon of the Eastern Ligurian Sea, November 2020-October 2022

description: This data set includes n.5 files containing observational data of a stand-alone mooring, at about 600 m depth along the Levante Canyon of the Eastern Ligurian Sea (44°05.443’N, 9°29.900’E, western Mediterranean). The time series covers the period from November 2020 to October 2022. The dataset includes measurements conducted with two current meters (ADCP RDI QuarterMaster and Nortek Continental) and three CTD probes (SBE37), and provides information about the hydrodynamics and thermohaline properties across almost the entire water column. The mooring is configured and maintained for continuous long-term monitoring being in a particular deep-sea area (about 600 m water depth), that acts as a hot-spot of biodiversity, hosting valuable and vulnerable ecosystems, such as the deep-living cold-water corals. Data are described in the data paper Ciuffardi et al.: Deep water hydrodynamic observations around a Cold-Water Coral habitat in a submarine canyon in the Eastern Ligurian Sea (Mediterranean Sea), Earth Syst. Sci. Data Discuss. [preprint], https://doi.org/10.5194/essd-2022-466, in review, 2023
DOI: 10.17882/92105
title: Applicability of the gape monitor to study flat oyster (Ostrea edulis) feeding behaviour

description: Innovative techniques are needed to assess oyster performance in flat oyster reef restoration projects. A valve gape monitor, a device that continuously measures opening and closing of live bivalves, can potentially be used as an effective method to determine survival and behaviour of the European flat oyster Ostrea edulis. The method has been successfully used in combination with a number of bivalve species to investigate valve gape activity in response to environmental factors. In this study, eight O. edulis were equipped with valve gape sensors in order to relate gape to environmental conditions such as food availability. Valve gape activity was monitored under controlled laboratory conditions, with and without food, in a concrete basin in the Oosterschelde and in the field (Voordelta, Dutch North Sea). Under controlled laboratory conditions, oysters clearly responded to changes in food availability. Starved oysters closed their valves significantly longer than oysters that received food, and the relative gape width in fed oysters were larger. In the concrete basin (Oosterschelde), a positive correlation between valve opening and Chlorophyll-a was found. Additionally, valve gape activity and tidal movement appeared to be linked. When exposed to a full tidal cycle (Voordelta), a negative correlation between valve opening and Chlorophyll-a was found. However, there was no correlation between valve gape and current velocity. In autumn, longer periods of inactivity were seen, but when valves opened, the valve gape was larger. These data indicate that valve gape can provide valuable information on behaviour (gape frequency and gape width), but also show that it is not necessarily a good proxy for feeding rate. Nevertheless, these results show that the gape monitor can be used to determine the natural behaviour of flat oysters under field conditions, and that gape opening provides information on behaviour and the stress response of bivalves to environmental conditions.
DOI: 10.17882/92104
title: ALOHA Cabled Observatory bottom pressure spectra

description: Frequency spectra from deep-ocean near-bottom acoustic measurements obtained contemporaneously with wind, wave, and seismic data are described and used to determine the correlations among these data and to discuss possible causal relationships. Microseism energy appears to originate in four distinct regions relative to the hydrophone: wind waves above the sensors contribute microseism energy observed on the ocean floor; a fraction of this local wave energy propagates as seismic waves laterally, and provides a spatially integrated contribution to microseisms observed both in the ocean and on land; waves in storms generate microseism energy in deep water that travels as seismic waves to the sensor; and waves reflected from shorelines provide opposing waves that add to the microseism energy. Correlations of local wind speed with acoustic and seismic spectral time series suggest that the local Longuet-Higgins mechanism is visible in the acoustic spectrum from about 0.4 Hz to 80 Hz. Wind speed and acoustic levels at the hydrophone are poorly correlated below 0.4 Hz, implying that the microseism energy below 0.4 Hz is not typically generated by local winds. Correlation of ocean floor acoustic energy with seismic spectra from Oahu and with wave spectra near Oahu imply that wave reflections from Hawaiian coasts, wave interactions in the deep ocean near Hawaii, and storms far from Hawaii contribute energy to the seismic and acoustic spectra below 0.4 Hz. Wavefield directionality strongly influences the acoustic spectrum at frequencies below about 2 Hz, above which the acoustic levels imply near-isotropic surface wave directionality.
DOI: 10.17882/92077
title: Long-term coastal marine waters quality monitoring Sozopol, Bulgaria (2013-2021)

description: Long-term coastal marine waters quality monitoring Sozopol, Bulgaria carried out by the Laboratory for Marine Ecolgy, IBER-BAS, 01.2013-11.2021 The dataset consists of weekly measurements of paramters of surface marine waters sampled at a location in Sozopol Bay, Bulgarian Black Sea coast. Measured paramters include water temperature and salinity, concentrations of ammonia, nitrates, nitrites, total nitrogen, organic nitrogen, phosphates, sestone and chlorophyll-a. Dataset is already available in the Emodnet Chemistry portal under the following ID: https://cdi.seadatanet.org/search/welcome.php?query=2229&query_code={87CC15A6-67F6-4B48-BBA4-A09B5D3AF4C6}
DOI: 10.17882/92043
title: HIPPO environmental monitoring: Impact of phytoplankton dynamics on water column chemistry and the sclerochronology of the king scallop (Pecten maximus) as a biogenic archive for past primary production reconstructions

description: Given the importance of phytoplankton for marine ecosystems (oxygen production, carbon sequestration, base of food webs, etc.), many studies focus on the reconstruction of its past temporal dynamics. Over the last decades, important changes of these dynamics have been observed, both in the phenology of the blooms and in the composition of microalgal communities. However, currently available data do not allow to go back far enough in time to quantify the actual impact of anthropogenic activities on these changes. However, the structural and/or chemical studies of the shell of the king scallop, Pecten maximus, hold the potential to cover this lack of data and provide informations about the environment they experienced. In order to better understand the processes which drive the incorporation of chemical elements into scallop shells and their links with phytoplankton dynamics, an environmental monitoring was conducted at Lanvéoc (Bay of Brest; France; 48°17'39"N - 04°27'12"W) between March and October 2021. During this survey, water samples from surface and bottom layers were collected in a bi-weekly or a weekly basis in order to analyse various environmental parameters (nutrients, phytoplankton dynamics, trace element concentration in the particulate and dissolved fraction, particulate organic carbone and nitrogen, chlorophyll, pheophytin, biogenic silicon, etc.). A sediment trap has also been used to better understand the chemical dynamics of the sedimenting matter. Simultaneously, several instruments, such as an Underwater Vision Profiler (UVP6) and sambat probes, were deployed at Lanvéoc throughout the year and continuously recorded additional parameters (particle concentration, temperature, salinity, pH, dissolved oxygen, etc.). Furthermore, scallops which experienced one winter season (age-class I) were deposited at the beginning of the survey both in direct contact with the substract and in a cage, located 1 m above it. At the end of the monitoring, these scallops were recovered and their growth rates as well as the chemical composition of their calcitic stuctures were measured in a daily basis. In addition to the objectives of the HIPPO project, the dataset that is available here can potentially be very useful for other scientists performing sclerochronological investigations, studying biogeochemical cycles or conducting various ecological research projects.
DOI: 10.17882/92042
title: Data associated to Pacific oysters challenged with OsHV-1 under field and laboratory conditions as a function of temperature, food supply, genetics and growth

description: Dataset associated to : Petton, B., Alunno Bruscia, M., Mitta, G., and Pernet, F. Increased growth metabolism promotes viral infection in susceptible oyster population. Aquaculture Environment Interactions, in revision. Here we present data from an experiment whose objective was to assess the effect of overall metabolism on the susceptibility of oysters to disease caused primarily by the ostreid herpesvirus type I infection. The basic hypothesis was that metabolism increases susceptibility to disease by promoting viral replication. Indeed, viruses depend on the cellular machinery of the host to replicate and any increase in the activity of this machinery should lead to an increase in the risk of mortality. In ecthoterm organisms such as oysters, growth metabolism can be modulated by acting on food, temperature and by choosing individuals with more or less rapid growth. To test this hypothesis, several lines of Pacific oysters with contrasting resistance phenotypes, divided into growth classes, were acclimated to two temperatures and three levels of food before exposure to a viral pathogen under laboratory and natural field conditions. We overall found that increasing host growth through temperature, food level, or selection of fast-growing animals all increased disease susceptibility. Food provisioning was the most influential factor associated with higher viral shedding, followed by temperature, resistance phenotype and individual growth rate. The database contains data and SAS code from: 1. oyster growth during the acclimation period, 2. food ingestion during acclimatization and virus infection, 3. survival following viral infection in the laboratory, 4. viral shedding, 5. biochemical composition of oysters, 6. survival following an infection in the natural environment.
DOI: 10.17882/91910
title: satellIte phytoplaNkton Drivers In the Global Ocean over 1998-2015 (INDIGO Benchmark dataset)

description: This benchmark dataset contains the physical data used as predictors to reconstruct global chlorophyll-a concentrations (Chl, a proxy of phytoplankton biomass) in Roussillon et al., as well as the reference satellite Chl target fields. The nine physical predictors' data (Short-Wave radiations, Sea Surface Temperature, Sea Level Anomaly, Zonal and meridional surface currents, Zonal and meridional surface wind stress, Bathymetry, Binary continental mask) were extracted from publicly available datasets over [1998-2015] and resampled to the same spatio-temporel resolution as Chl, i.e. monthly on a 1°x1° grid between 50°N and 50°S. Missing values were gap-filled using the heat diffusion equation. Each variable was normalized by substracting its mean from the original values and dividing by its standard deviation over [1998-2015]. This dataset was used to train and validate the Multi-Mode Convolutional Neural network (CNNMM8) introduced in Roussillon et al. ; reconstructed monthly Chl fields over the [2012-2015] test period are also provided here. We hope this benchmark dataset can help to promote the improvements of methods as well as the emergence of new ideas, as building datasets is sometimes more time-consuming than the implementation of machine learning tools themselves. This would also facilitate the quantitative comparison of models performances' on the exact same datasets.
DOI: 10.17882/91758
title: New insights on the glacial-interglacial dynamics of the European Slope Current based on a 36,000-year sediment record from the southern Bay of Biscay

description: In the mid-latitudes of the northeast Atlantic, the study of the upper branch of the AMOC is poorly documented. This study provides a complete record of the glacial, deglacial and Holocene dynamics of the easternmost portion of the upper branch of the AMOC, namely the European Slope Current and its glacial equivalent know as the Glacial Eastern Boundary Current (GEBC). To do so, we use core SU81-44 (~1000 m water depth) from the of southern Bay of Biscay (BoB) upper slope, .The aim of this study is to reconstruct paleoenvironmental and hydrodynamic changes using a multiproxy approach (i.e. benthic foraminiferal assemblage, grain size proxies, oxygen and carbon stable isotopes, and foraminiferal εNd). During the glacial period and the onset of the deglaciation, our results show that the grain size proxies together with the relative densities of the high-energy indicator species Trifarina angulosa and the low oxygen tolerant Globobulimina spp. showed significant fluctuations. These were concomitant with the main climate changes recognized over this period and with the glacial slope paleoflow reconstruction from the northern BoB. This highlights a strong climatic/oceanographic forcing on the sedimentary characteristics of the region and a prominent forcing by changes in near-bottom flow speed. Our data also provide a new constraint on the strength of the slope current in the region during the late deglaciation and Holocene periods. We observe a reinvigoration of the upper branch of the AMOC during the Bølling-Allerød warming, preceding the abrupt resumption of the deeper branch of the AMOC in the western North Atlantic. This seems to confirm the crucial role of the European Slope Current in deep water formation, as it is the case today. Finally, our data show a progressive weakening of the ESC during the Holocene and we hypothesize a link with the long-term dynamics of the subpolar gyre.
DOI: 10.17882/91609
title: Water quality data inside Ria Formosa

description: UBEST (Understanding the biogeochemical buffering capacity of estuaries relative to climate change and anthropogenic inputs) project aimed to improve the global understanding of the biogeochemical buffering capacity of estuaries and their susceptibility to future scenarios of anthropogenic inputs and climate change, by deploying “coastal observatories” in two Portuguese case studies: the Tagus estuary and the Ria Formosa, a coastal lagoon. As part of this project, a water quality online monitoring station was installed in the Ria Formosa - in the Cais do Combustível of the Port of Faro (37º00’9.92’’ N, 7º55’16.28’’ W, depth 2,75 m). The station was equipped with an YSI EXO 2 multiparameter probe, measuring water temperature, conductivity, salinity pH, dissolved oxygen, turbidity and chlorophyll a, and an OBSERMET OMC-045-III data logger, for data acquisition and transmission.
DOI: 10.17882/91343
title: Spatial datalayers and associated R code used to derive the statistics on potential carbon benefits from different biodiversity focused spatial management measures of the seabed in the UK

description: Associated data and R code for the paper Epstein & Roberts 2022 - "Does biodiversity focused protection of the seabed deliver carbon benefits? A UK case study." This repository contains the spatial datalayers and associated R code used to derive the statistics on potential carbon benefits from different biodiversity focused spatial management measures in the UK. The input data required can be found in an asociatted reposititory from the PLOS Climate paper Epstein & Roberts (2022) Identifying priority areas to manage mobile bottom fishing on seabed carbon in the UK. https://doi.org/10.1371/journal.pclm.0000059. Data at - https://www.seanoe.org/data/00784/89590/
DOI: 10.17882/91337
title: MAUPITI HOE - wave friction

description: Maupiti ("the Stuck Twins'') is a diamond-shaped island located in the western part of the Society archipelago in French Polynesia. The present study focuses on the data recovered over a single cross-barrier transect located in the south-west barrier during the MAUPITI HOE field campaign, from 5 to 18 July 2018. The studied area is representative of the reef structure observed along the 4km-long southwestern barrier reef, showing an alongshore-uniform structure exposed to swell approaching with weak incident angles, a healthy reef colony. In the cross-barrier direction, the reef displays a clear partitioning of bottom roughness that ranges from low-crested compact structures at the reef crest to higher and sparser coral bommies on the backreef. The experimental setup was specifically designed to analyse and differentiate the dynamics over three roughness-contrasting sections found over the barrier reef.