Article
Engineering, Marine
Ammar A. Mannaa, Rabea A. Haredy, Ibrahim M. Ghandour
Summary: The study focuses on the Holocene inland beachrocks in the Red Sea coastal plain in Saudi Arabia, examining their composition and isotopic data to understand their origin. The beachrock is composed of volcanic rocks, cherts, and rare limestones, cemented mainly by high Mg-calcite. Isotopic values suggest precipitation from marine waters with a slight meteoric contribution in proximal samples.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2021)
Article
Environmental Sciences
P. V. Vipindas, T. Jabir, K. M. Mujeeb Rahiman, T. Rehitha, V Sudheesh, Y. Jesmi, A. A. Mohamed Hatha
Summary: This study aimed to explore the impact of anthropogenic organic matter on the microbial community distribution in the continental shelf sediments of the Southeastern Arabian Sea. It found significant variations in sediment C:N molar ratio and microbial community composition between the inner and outer shelf, with different types of bacteria dominating each region based on the source of organic matter.
MARINE POLLUTION BULLETIN
(2022)
Article
Environmental Sciences
Katarzyna Lukawska-Matuszewska, Olga Broclawik, Aleksandra Brodecka-Goluch, Grzegorz Rzepa, Maciej Manecki, Jerzy Bolalek
Summary: This study investigates how salinity, oxygen concentration, and catchment area characteristics influence the dynamics of Fe-P-S cycling in continental shelf sediments. The results show that environmental conditions vary among different regions, leading to variations in microbial communities and the cycling of iron, phosphorus, and sulfur.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Meteorology & Atmospheric Sciences
V. P. Akhil, M. Lengaigne, K. S. Krishnamohan, M. G. Keerthi, J. Vialard
Summary: Previous studies suggest that winter surface freshening in the southeastern Arabian Sea (SEAS) contributes to the development of high Sea Surface Temperatures (SST) and influences the summer monsoon onset. This study uses a regional ocean model to investigate the mechanisms and impact of SEAS Sea Surface Salinity (SSS) variability. The results show that the decrease in winter SSS is due to the advection of Bay of Bengal freshwater and that salinity stratification affects mixed layer cooling and has little impact on SST and monsoon rainfall.
Article
Environmental Sciences
Fahad Al Senafi
Summary: The Arabian Gulf is one of the world's most unique and fragile marine ecosystems, vulnerable to climate change due to its shallow depth and arid location. This study analyzes sea surface temperature (SST) variability in the Gulf using empirical orthogonal function (EOF) decomposition analysis from 1982 to 2020. The results indicate that SST variability in the Gulf is influenced by the El Niño-Southern Oscillation (ENSO), Atlantic Multi-decadal Oscillation (AMO), and Indian Ocean Dipole (IOD) climate modes. Additionally, the study reveals a warming trend in the average SST in the Gulf over the past four decades, despite indications of overall heat loss at the air-sea interface.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Dharmendra Pratap Singh, Rajeev Saraswat, Rahul Pawar
Summary: This study examines the morphology of benthic foraminifera and its relationship with ambient environmental parameters in the southeastern Arabian Sea. The results show that different environmental conditions lead to variations in the morphology of benthic foraminifera, and they can be used as indicators for reconstructing paleoenvironments.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Geology
Abdullah Nabhan, Wan Yang
Summary: The coastal sediments of Al Qahmah in the southern Red Sea provide a high-resolution analog for studying carbonate and siliciclastic sedimentation in marginal marine environments under varying climatic and tectonic conditions. The stratigraphy reveals four units with different types of sediments, indicating changes in sea level, tectonic activity, and climate. This study offers important insights for understanding Late Holocene sedimentation patterns in the Red Sea region and beyond.
SEDIMENTARY GEOLOGY
(2022)
Article
Environmental Sciences
Urszula Kwasigroch, Magdalena Beldowska, Agnieszka Jedruch, Katarzyna Lukawska-Matuszewska
Summary: The study investigated the levels of mercury and its forms in surface sediments of the Baltic Sea, finding that Hg concentrations were highest in industrialized areas and regions affected by historical activities. Labile Hg fractions, mainly organic compounds, were found to be dominant and potentially release into the water column, impacting the trophic chain. Despite reduced Hg emissions, surface sediments remain a significant secondary Hg source in the Baltic Sea ecosystem.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Environmental Sciences
Sanitha K. Sivadas, G. V. M. Gupta, Sanjeev Kumar, Baban S. Ingole
Summary: Coastal upwelling in the eastern Arabian Sea drives complex dynamics of macrofaunal communities, with spatiotemporal variations observed in composition. Taxonomic patterns show an increase in diversity from nearshore to mid-shelf, while abundance-driven differences in traits reveal important habitat filtering mechanisms. Organic matter increase and dissolved oxygen decrease influenced by upwelling, along with spatial variation in sediment texture, are significant drivers of macrofaunal taxonomic patterns.
MARINE ENVIRONMENTAL RESEARCH
(2021)
Article
Environmental Sciences
Albertina B. Dias, Siby Kurian, Neethu T. Vijayan, Mangesh Gauns, Rahul Khichi, Anil K. Pratihary, Sidhesh G. Borker, Damodar M. Shenoy
Summary: Gonyaulax polygramma, a bloom-forming dinoflagellate, has been observed repeatedly in the southeastern Arabian Sea. In October 2021, a reddish-brown water patch off the coast of Kannur, India was identified as Gonyaulax polygramma using microscopy and pigments analysis. The bloom was dominated by Gonyaulax polygramma, with high concentrations of peridinin, chlorophyll-a, and dimethylsulfide. Satellite data was also used to detect and monitor the bloom. Due to its recurrent occurrence, regular satellite monitoring is proposed.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2023)
Article
Environmental Sciences
Abdullah M. Al-Subhi, Cheriyeri P. Abdulla
Summary: Analyzing nearly 30 years of satellite altimetry data reveals distinct seasonal and long-term trends in sea level in the Arabian Gulf, which are opposite to changes observed in the adjacent Red Sea. Projections suggest a continued rise in sea level in the region, with potential implications for coastlines and coastal areas.
Review
Oceanography
Jayashree Ghosh, Kunal Chakraborty, Trishneeta Bhattacharya, Vinu Valsala, Balaji Baduru
Summary: This study examines the impact of coastal upwelling dynamics on the spatio-temporal variability of pCO2 in the southeastern Arabian Sea (SEAS). It finds that the cold deeper water rising to the surface during upwelling decreases surface ocean pCO2, while carbon-rich upwelling waters increase pCO2. Temperature, dissolved inorganic carbon, and biological activities also affect pCO2 variability, but coastal upwelling dynamics dominate in controlling this variability.
PROGRESS IN OCEANOGRAPHY
(2022)
Article
Ecology
Kannaiyan Neelavannan, S. M. Hussain, N. Mohammed Nishath, Hema Achyuthan, S. Veerasingam, Muthusamy Prakasam, Pankaj Kumar, Pramod Singh, P. John Kurian
Summary: The study analyzed marine sediment deposited in western coastal areas and the ocean floor to understand productivity variations over the past 130 ka. It found differences in calcium carbonate content and C/N ratio between glacial and interglacial periods, indicating an impact of strong southwest monsoons on productivity.
REGIONAL STUDIES IN MARINE SCIENCE
(2021)
Article
Geochemistry & Geophysics
Norbert R. Nowaczyk, Jiabo Liu, Birgit Plessen, Antje Wegwerth, Helge W. Arz
Summary: A detailed paleosecular variation (PSV) record from sediment cores recovered from the Arkhangelsky Ridge in the SE Black Sea provides insight into the geomagnetic field behavior during the pen-ultimate glacial period. The age constraints are determined by a composite oxygen isotope stratigraphy and U-Th-dated speleothem oxygen isotope records. The stacked paleomagnetic data records have a temporal resolution of 200 years.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Environmental Sciences
D. P. Singh, R. Saraswat, R. Nigam
Summary: The study found that bottom water dissolved oxygen and organic carbon in sediments have a significant impact on living benthic foraminifera. By analyzing the relationship between marine environmental parameters and living benthic foraminifera, it is possible to reconstruct past marine productivity and dissolved oxygen concentration.
MARINE POLLUTION BULLETIN
(2021)
