Article
Oceanography
Nuno G. F. Cordeiro, Rita Nolasco, Eric D. Barton, Jesus Dubert
Summary: The hydrography and circulation of the Northwestern Iberian Margin (NWIM) were studied over an annual cycle, with a focus on the Cape Silleiro border region. The model validation showed that it could reproduce many aspects of the observed variability, providing a basis for multidisciplinary studies.
PROGRESS IN OCEANOGRAPHY
(2021)
Review
Oceanography
Yasemin V. Bodur, Paul E. Renaud, Lucie Goraguer, Marti Amargant-Arumi, Philipp Assmy, Anna Maria Dabrowska, Miriam Marquardt, Angelika H. H. Renner, Agnieszka Tatarek, Marit Reigstad
Summary: The northern Barents Sea is a productive Arctic inflow shelf with a seasonal ice cover, and it experiences an efficient downward export of particulate organic matter through the biological carbon pump. The study found that the vertical flux of particulate organic matter was highest in May and August, characterized by different contributors and spatial patterns. The findings suggest that the efficiency of the biological carbon pump depends on the reworking of sinking material and the occurrence of mixing.
PROGRESS IN OCEANOGRAPHY
(2023)
Article
Oceanography
Pierre L'Hegaret, Charly de Marez, Mathieu Morvan, Thomas Meunier, Xavier Carton
Summary: In the Indian Ocean, outflows from the Persian Gulf and Red Sea impact the Arabian Sea region, affecting its thermohaline characteristics and exhibiting spatial and seasonal variability. Developing an algorithm to detect the vertical structure of these outflows helps quantify changes in their thermohaline signatures and vertical structures, with observations of early mixing in the Gulf of Oman and Aden.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2021)
Article
Environmental Sciences
Marius G. Floriancic, Wouter R. Berghuijs, Peter Molnar, James W. Kirchner
Summary: This study identified regional patterns of the timing of low flows across 1860 European and US catchments, showing that low flows tend to occur during late summer or winter in more consistent patterns. In most catchments, low flows occur during the warm season, while in higher elevation regions such as the European Alps and Rocky Mountains, low flows mostly occur during winter due to freezing temperatures. Binomial statistics helped exclude individual climatic drivers for certain regions.
WATER RESOURCES RESEARCH
(2021)
Article
Geosciences, Multidisciplinary
A. E. Lopez-Perez, B. Rubio, D. Rey, M. Plaza-Morlote, L. M. Pinheiro
Summary: Studies of the surficial sedimentary record from passive continental margins provide crucial knowledge about sedimentary dynamics and changes through recent geological times. This study presents a detailed record of tectono-sedimentary processes on an isolated high marginal platform, revealing structural features and different water mass-controlled sedimentary systems. The results also indicate erosive features and extremely low sedimentation rates in the study area.
Article
Meteorology & Atmospheric Sciences
Eduardo Utrabo-Carazo, Cesar Azorin-Molina, Encarna Serrano, Enric Aguilar, Manola Brunet, Jose A. Guijarro
Summary: This study analyzes the wind speed changes in Spain and Portugal from 1961 to 2019. It found that the stilling phenomenon has ceased and there might be a weak reversal phenomenon in recent decades. The increase in atmospheric thermal stability and the northward shift of the jet stream are proposed as the main causes of the stilling phenomenon in this region. The study improves our understanding of wind changes and highlights the importance of regional assessments.
ATMOSPHERIC RESEARCH
(2022)
Article
Engineering, Marine
Chaoyang Li, Pengyao Zhi, Renwei Ding, Lihong Zhao, Wei Gong, Zhonghua Li, Jiayu Ge
Summary: This study integrates various geological data to investigate the thermo-rheological structure of the Qiongdongnan Basin (QDNB) and Pearl River Mouth Basin (PRMB), focusing on the variation of the passive continental margin rifting from west to east. The research reveals that the current architecture of the continental margin is the result of non-uniform extension, with the rupture of the mantle lithosphere preceding the crust due to the decoupled crust-mantle relationship. The presence of high-velocity layers (HVLs) and detachment faults beneath the Xisha Trough and the eastern PRMB are attributed to the cooling of a thinned lower crust with mantle underplating during different stages of continental margin rifting. A seaward-increasing trend of lithospheric rheological strength is observed across the PRMB.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Environmental Sciences
Beatriz Biguino, Carlos Antunes, Luisa Lamas, Luke J. Jenkins, Joao Miguel Dias, Ivan D. Haigh, Ana C. Brito
Summary: Climate change is causing spatially and temporally non-uniform increases in mean sea surface temperatures (SST) worldwide. This study aims to quantify changes in SST along the Western Iberian Coast over the past four decades by analyzing long-term time series data. The results show regional variations in SST trends, with an increase in air temperature appearing to be the main driver. The seasonal cycle of SST and trends in near-shore areas were not significantly affected, likely due to the buffering effect of seasonal upwelling. Recent decades have shown a slowdown in SST increase, potentially due to upwelling intensification and the impact of teleconnections like the North Atlantic Oscillation and the Western Mediterranean Oscillation Index.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Medicinal
Pascual Garcia-Perez, Catarina Lourenco-Lopes, Aurora Silva, Antia G. Pereira, Maria Fraga-Corral, Chao Zhao, Jianbo Xiao, Jesus Simal-Gandara, Miguel A. Prieto
Summary: This study extracted and analyzed pigments from nine brown algae and found that ethanol and acetone were the most efficient solvents for pigment extraction. Additionally, the pigment composition of brown algae was determined, providing new insights for their commercial exploitation in the food, pharmaceutical, and cosmeceutical industries.
Article
Mechanics
De-chao Hu
Summary: A new method is proposed in this study to extract circulations in arbitrary vertical planes of natural rivers with irregular shape. The method is simple and only requires the distribution of horizontal velocities, which can be calculated based on a 3-D model or field measurements. The validity of the method is confirmed using field data from the lower Yangtze River, and its capability is demonstrated through examples of typical riverbends.
JOURNAL OF HYDRODYNAMICS
(2022)
Article
Forestry
Sinework Dagnachew, Demel Teketay, Sebsebe Demissew, Tesfaye Awas, Debissa Lemessa
Summary: This study observed the relationships between flowering and fruiting phenophases of seven indigenous plant species and monthly rainfall and temperature. The results showed that the effects of climatic variables vary among different plant species and different phenophases. Therefore, considering these different effects is crucial for forest conservation planning.
Article
Chemistry, Multidisciplinary
Marek Zygmunt, Ilona Garczynska, Pawel Zalewski
Summary: This study investigates vertical land movements in northwestern Poland, focusing on the city of Szczecin. The researchers analyze the geological structure and height changes of benchmarks in the Szczecin area, particularly in relation to organic sediments. By selecting stable benchmarks and conducting precise measurements, they identify reliable reference points for monitoring surface deformations. The study also examines the vertical land motions of engineering structures in the Oder River Szczecin islands. Static GNSS observations were carried out in November 2020 and May 2021.
APPLIED SCIENCES-BASEL
(2022)
Article
Environmental Sciences
Pavel Balvin, Adam Vizina, Magdalena Nesladkova, Johanna Blocher, Marcela Makovcova, Vojtech Moravec, Martin Hanel
Summary: The determination of minimum residual flow (MRF) in Europe varies due to different hydrological conditions, ecosystem requirements, water abstraction needs, and legislation. Despite the difficulty in qualitatively comparing methodologies among countries, individual approaches can serve as examples for developing new methodologies in legislative or environmental improvements. The Czech Republic has been working on MRF regulations for ten years, focusing on modern trends in ecological standards and utilizing standard hydrological characteristics for calculations. The new proposed approach is undergoing a complex approval process as it seeks to increase MRF levels compared to current methods.
Review
Oceanography
Fanglou Liao, Guandong Gao, Peng Zhan, Yan Wang
Summary: This study investigates the seasonal variations and trend of the global upper-ocean vertical velocity using a state-of-the-art ocean state estimate. Significant seasonal variations are found, but no statistically significant basin-scale patterns of intensification or weakening of vertical circulations are observed in the top 200 m of the global ocean during 1998-2017.
PROGRESS IN OCEANOGRAPHY
(2022)
Article
Thermodynamics
Kapil Bodkha, D. S. Pilkhwal, N. K. Maheshwari
Summary: This study focuses on the heat transfer behavior of supercritical fluids under natural circulation conditions and presents important findings related to fluid flow and heat transfer. The study also compares heat transfer correlations and experimentally obtained coefficients.
JOURNAL OF HEAT TRANSFER-TRANSACTIONS OF THE ASME
(2022)
Article
Environmental Sciences
I Laiz, S. Plecha, A. Teles-Machado, E. Gonzalez-Ortegon, D. Sanchez-Quiles, A. Cobelo-Garcia, D. Roque, A. Peliz, R. F. Sanchez-Leal, A. Tovar-Sanchez
SCIENCE OF THE TOTAL ENVIRONMENT
(2020)
Article
Oceanography
Rita F. T. Pires, Alvaro Peliz, Maria Pan, Antonina dos Santos
PROGRESS IN OCEANOGRAPHY
(2020)
Review
Oceanography
Henrique Cabral, Hilaire Drouineau, Ana Teles-Machado, Maud Pierre, Mario Lepage, Jeremy Lobry, Patrick Reis-Santos, Susanne E. Tanner
Summary: Variability in recruitment success of larvae to estuarine nursery areas for different fish species along the Iberian Atlantic coast was analyzed, showing high inter- and intra-annual variation. Highest recruitment estimates were found for S. solea and D. labrax, with recruitment being overall higher at earlier spawning dates. Connectivity patterns between cold and warm year archetypes were also explored, highlighting the importance of understanding oceanographic conditions in predicting potential impacts of climate change on species with segregated life histories.
PROGRESS IN OCEANOGRAPHY
(2021)
Review
Oceanography
Rita F. T. Pires, Alvaro Peliz, Antonina dos Santos
Summary: The study focused on the distribution and transport of deep-water shrimp larvae, providing information on potential pathways and mechanisms of dispersal, giving important indications for deep-water shrimp species worldwide.
PROGRESS IN OCEANOGRAPHY
(2021)
Article
Environmental Sciences
Andrea Casaucao, Enrique Gonzalez-Ortegon, Maria P. Jimenez, Ana Teles-Machado, Sandra Plecha, Alvaro J. Peliz, Irene Laiz
Summary: The study reveals that chlorophyll with a time-lag of three days best characterized the spawning areas of European anchovy in the Gulf of Cadiz. Lagrangian model simulations during the most intense spawning peak of 2016 showed that most early life stages were transported to the western Portuguese coast, increasing connectivity between spawning and nursery areas. This suggests that coastal countercurrent events during the spawning season could partly explain the increase of anchovy on the western Portuguese coast and decrease in the Gulf of Cadiz one year later.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Leonardo Azevedo, Luis Matias, Francesco Turco, Renan Tromm, Alvaro Peliz
Summary: The study utilized a two-dimensional multichannel seismic reflection profile to predict the probability of occurrence of distinct water masses and image the fine scale structure of the water column. Through seismic oceanography processing, geostatistical inversion, and Bayesian classification, the spatial distribution of temperature and salinity was successfully predicted, providing a preliminary interpretation of the expected ocean dynamics in the region.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Meteorology & Atmospheric Sciences
Teresa Carmo-Costa, Roberto Bilbao, Pablo Ortega, Ana Teles-Machado, Emanuel Dutra
Summary: This study investigates the trends, variability, and predictive skill of the upper ocean heat content in the North Atlantic basin. Internal variability plays a crucial role in understanding the spatial pattern of North Atlantic OHC trends, providing high levels of predictive skill in certain regions.
Correction
Meteorology & Atmospheric Sciences
Teresa Carmo-Costa, Roberto Bilbao, Pablo Ortega, Ana Teles-Machado, Emanuel Dutra
Article
Environmental Sciences
Beatriz Biguino, Estrella Olmedo, Afonso Ferreira, Nuno Zacarias, Luisa Lamas, Luciane Favareto, Carla Palma, Carlos Borges, Ana Teles-Machado, Joaquim Dias, Paola Castellanos, Ana C. Brito
Summary: Salinity is an important parameter to study in the context of climate change, and quantifying it through satellite remote sensing has been a recent achievement. This study tested the quality of a new higher resolution SMOS sea surface salinity product and found it to be a valuable tool for long-term studies along the Portuguese coast.
Article
Environmental Sciences
Seyed Hossein Hassantabar Bozroudi, Daniele Ciani, Mahdi Mohammad Mahdizadeh, Mohammad Akbarinasab, Ana Claudia Barbosa Aguiar, Alvaro Peliz, Bertrand Chapron, Ronan Fablet, Xavier Carton
Summary: The study reveals that Mediterranean Water eddies have a significant impact on the propagation of sound signals, creating sound channels for signals to travel with large acoustic energy, while signals outside these channels are deflected.
Article
Fisheries
Francisco Izquierdo, Raquel Menezes, Laura Wise, Ana Teles-Machado, Susana Garrido
Summary: This study standardized the fishery-dependent catch-per-unit-effort (CPUE) data of sardines from the west coast of Portugal using Bayesian hierarchical spatio-temporal models. The results showed that factors such as vessel length, vessel ID, month, year, and location influenced sardine CPUE. The spatio-temporal distribution of sardine biomass exhibited a constant pattern that changed every quarter of the year, with a cyclical trend in CPUE values over time.
FISHERIES MANAGEMENT AND ECOLOGY
(2022)
Article
Environmental Sciences
Amelie Simon, Sandra M. Plecha, Ana Russo, Ana Teles-Machado, Markus G. Donat, Pierre-Amael Auger, Ricardo M. Trigo
Summary: Marine temperature extremes are anomalous ocean temperature events with potential impacts on physical, ecological, and socio-economic processes. A metric called activity, which combines the number of events, duration, intensity, and spatial extent, is used to rank and evaluate the relative importance of these events. In the Mediterranean basin, summer 2018 had slightly higher marine heatwave (MHW) activity compared to summer 2003, while winter marine cold spell (MCS) activity was higher in the 1980s-1990s. MHWs were most active in the western Mediterranean, while MCSs were strongest in the eastern Mediterranean. The long-term trend shows an accelerated increase in summer MHW activity and a linear decrease in winter MCS activity in the Mediterranean over the last four decades.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Oceanography
Martin Vodopivec, Klodian Zaimi, Alvaro J. Peliz
Summary: This study investigates the sensitivity of circulation and hydrology in the Adriatic Sea to freshwater balance and heat loss through a series of modeling experiments. The results show that the salinity in the shelf and surface waters of the southern Adriatic are part of a self-amplifying loop involving water exchange and density formation. Furthermore, the study highlights the importance of river discharge and atmospheric forcing in determining the hydrology and circulation in the Adriatic Sea.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Proceedings Paper
Instruments & Instrumentation
Ana F. Duarte, Andre Facchinei, Luis Matias, Alvaro Peliz, Francesco Turco, Leonardo Azevedo
Summary: Seismic oceanography data processing and inversion techniques reveal potential insights into large- and small-scale ocean processes. Processed seismic sections show features such as eddies, steeply dipping reflectors, and strong horizontal reflections between water masses. By combining temperature and salinity information from various sources, geostatistical techniques were used to predict and interpolate spatial temperature and salinity distributions.
2021 IEEE INTERNATIONAL WORKSHOP ON METROLOGY FOR THE SEA (METROSEA 2021)
(2021)