Water Mass Variability and Levantine Intermediate Water Formation in the Eastern Mediterranean Between 2015 and 2017

Date

2021-02-01

Author

Fach Salihoğlu, Bettina Andrea
Örek, Hasan
Salihoglu, Ilkay
Tezcan, Devrim
Latif, Mohammed Abdul
Salihoğlu, Barış

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

320
views

0
downloads

The physical characteristics of water masses in the Cilician Basin were analyzed based on recent, comprehensive in-situ data. Nine seasonal cruises from June 2015 to November 2017 were carried out in an area located in the north-eastern Levantine Basin between the coasts of Turkey and Cyprus. In this little studied area, the structure of the water column, its seasonal variability, and water formation events are investigated. The extensive data set reveals that in summer Modified Atlantic Water (MAW) is observed at about 50 m depth. Saltier and warmer Levantine Intermediate Water (LIW) lies below the MAW between similar to 100 and 250 m. During winter, the water column becomes mixed due to surface cooling and vertical convection, and displays uniform properties from the surface to about 200-300 m depths. The yearly cycle of a vertically uniform water column during winter and the appearance of LIW in the following period suggests that LIW is being formed in this region, which is confirmed through heat and buoyancy flux calculations. It is the first time LIW formation is reported in this area of the north-eastern Levantine Basin and adds to the areas of LIW formation outside Rhodes Gyre. In the 2.5 years of the study, LIW salinity increased by 0.11 psu in 2017, while surface water salinity increased by 0.5 psu over the same period. The presence of meso-scale eddies in the study area is observed throughout the year. The eddies are short-lived, having a time span of a few months, during which they either change location or disappear.

URI

https://hdl.handle.net/11511/89539

Journal

JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS

DOI

https://doi.org/10.1029/2020jc016472

Collections

Graduate School of Marine Sciences, Article

Suggestions

OpenMETU
Core

Water level and fish-mediated cascading effects on the microbial community in eutrophic warm shallow lakes: a mesocosm experiment ÖZEN, ARDA; Bucak, Tuba; Tavsanoglu, Ulku Nihan; Cakiroglu, Ayse Idil; Levi, Eti Ester; Coppens, Jan; Jeppesen, Erik; Beklioğlu, Meryem (Springer Science and Business Media LLC, 2014-11-01) Information on the effects of water level changes on microbial planktonic communities in lakes is limited but vital for understanding ecosystem dynamics in Mediterranean lakes subjected to major intra- and inter-annual variations in water level. We performed an in situ mesocosm experiment in an eutrophic Turkish lake at two different depths crossed with presence/absence of fish in order to explore the effects of water level variations and the role of top-down regulation at contrasting depths. Strong effects...
Water level control over submerged macrophyte development in five shallow lakes of Mediterranean Turkey Beklioğlu, Meryem; Tan, Can O. (2006-08-01) The functioning of shallow lakes is supposedly very sensitive to water level fluctuations (WLF). Relationships between WLF and submerged macrophyte development were investigated in five Turkish shallow lakes located in a semi-arid to and Mediterranean climate where the hydrological event of WLF is a common phenomenon. In all lakes, WLF emerged as a major factor determining submerged plant development. High submerged plant coverage was observed in four of the study lakes, Lake Beysehir, Lake Uluabat, Lake Ma...
Water-mass properties and circulation on the west Antarctic Peninsula Continental Shelf in Austral Fall and Winter 2001 Klinck, JM; Hofmann, EE; Beardsley, RC; Salihoğlu, Barış; Howard, S (2004-01-01) Hydrographic measurements made during the US Southern Ocean Global Ocean Ecosystem Dynamics cruises, which took place from April to June and July to September 2001, provide a description of changes in water-mass distributions and circulation patterns in the Marguerite Bay region of the west Antarctic Peninsula continental shelf that result from seasonal variability and offshore forcing by the southern boundary of the Antarctic Circumpolar Current (ACC). The primary seasonal change in water-mass properties i...
Climate variability and deep water mass characteristics in the Aegean Sea Georgiou, S.; Mantziafou, A.; Sofianos, S.; Gertman, I.; Ozsoy, E.; Somot, S.; Vervatis, V. (2015-01-15) The main objective of this study is to investigate the variability of the thermohaline characteristics of the deep-water masses in the Aegean Sea and the possible impact of the regional atmospheric forcing variability by analyzing the available oceanographic and atmospheric datasets for the period of 1960-2012. During this period the variability of the deep water characteristics of the Aegean sub-basins is found to be very large as well as the diversity of the deep water characteristics among the sub-basins...
Density currents in the two-layer flow: an example of Dardanelles outflow Besiktepe, ST (Elsevier BV, 2003-06-01) Observations from hydrographic surveys are used to describe the density current flowing through the Dardanelles strait into the Marmara Sea. Aegean water plunges below the surface and flows into the Marmara Sea. This flow joins into the Marmara Sea as a negatively buoyant plume and sinks through the deeper parts. Seasonal variation in the incoming water density results in the observing mainly two different forms of the density current in this area. These two forms are boundary currents and intrusion. Bounda...

Citation Formats

B. A. Fach Salihoğlu, H. Örek, I. Salihoglu, D. Tezcan, M. A. Latif, and B. Salihoğlu, “Water Mass Variability and Levantine Intermediate Water Formation in the Eastern Mediterranean Between 2015 and 2017,” JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, pp. 0–0, 2021, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/89539.