Sea level variability at Antalya and Mentes tide gauges in Turkey: atmospheric, steric and land motion contributions

Date

2012-01-01

Author

Simav, Mehmet
Yildiz, Hasan
Turkezer, Ali
Lenk, Onur
Ozsoy, Emin

Metadata

Show full item record

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

Item Usage Stats

138
views

0
downloads

Sea level trends and interannual variability at Antalya and Mentes tide gauges are investigated during the 1985-2001 period, quantifying the roles of atmospheric, steric and local land motion contributions. Tide gauge sea level measurements, temperature/salinity climatologies and GPS data are used in the analyses and the results are compared with the output of a barotropic model forced by atmospheric pressure and wind. The overall sea level trends at two tide gauges collocated with GPS are in the range of 5.5 to 7.9 mm/yr during the study period, but showing different behaviour in the sub-periods 1985-1993 and 1993-2001 due to variations in the contributing factors both in space and time. After the removal of the atmospheric forcing and steric contribution from sea level records, the resulting trends vary between 1.9 to 4.5 mm/yr in Antalya and -1.2 to -11.6 mm/yr in Mentes depending on the period considered. Vertical land movement estimated from GPS data seems to explain the high positive residual trend in Antalya during the whole period. On the other hand, the source of the highly negative sea level trend of about -14 mm/yr in Mentes during 1985-1993 could not be resolved with the available datasets. Interannual variability of wind and atmospheric pressure appear to dominate the sea level at both tide gauges during the study period. Atmospheric and steric contributions together account for similar to 50% of the total sea level variance at interannual time scales. Mass induced sect level variations which were not considered in this study may help to close the sea level trend budgets as well as to better explain the interannual sett level variance.

Subject Keywords

Geochemistry and Petrology, Geophysics

URI

https://hdl.handle.net/11511/68060

Journal

STUDIA GEOPHYSICA ET GEODAETICA

DOI

https://doi.org/10.1007/s11200-010-0067-x

Collections

Graduate School of Marine Sciences, Article

Suggestions

OpenMETU
Core

Estimating tectonic history through basin simulation-enhanced seismic inversion: geoinfomatics for sedimentary basins Tandon, K; Tuncay, Kağan; Hubbard, K; Comer, J; Ortoleva, P (Oxford University Press (OUP), 2004-01-01) A data assimilation approach is demonstrated whereby seismic inversion is both automated and enhanced using a comprehensive numerical sedimentary basin simulator to study the physics and chemistry of sedimentary basin processes in response to geothermal gradient in much greater detail than previously attempted. The approach not only reduces costs by integrating the basin analysis and seismic inversion activities to understand the sedimentary basin evolution with respect to geodynamic parameters- but the tec...
Hydrogeochemical outline of thermal waters and geothermometry applications in Anatolia (Turkey) Mutlu, Halim; Güleç, Nilgün Türkan (Elsevier BV, 1998-10-01) The chemical compositions of a total of 120 thermal water samples from four different tectonically distinct regions (Central, North, East and West Anatolia) of Turkey are presented and assessed in terms of geothermal energy potential of each region through the use of chemical geothermometers. Na-Ca-HCO3, type waters are the dominant water types in all the regions except that Na-Cl type waters are typical for the coastal areas of West Anatolia and for a few inland areas of West and Central Anatolia where dee...
Sensitivity Study of Hydrodynamic Parameters During Numerical Simulations of Tsunami Inundation Ozer, Ceren; Yalçıner, Ahmet Cevdet (Springer Science and Business Media LLC, 2011-11-01) This paper describes the analysis of a parameter, "hydrodynamic demand,'' which can be used to represent the potential for tsunami drag force related damage to structures along coastlines. It is derived from the ratio of drag force to hydrostatic force caused by a tsunami on the structure. It varies according to the instantaneous values of the current velocities and flow depths during a tsunami inundation. To examine the effects of a tsunami in the present study, the analyses were performed using the tsunam...
Evaluation of Site Response with Alternative Methods: A Case Study for Engineering Implications Sisman, Fatma Nurten; Askan Gündoğan, Ayşegül; Asten, Michael (Springer Science and Business Media LLC, 2018-01-01) In this paper, efficiency of alternative geophysical techniques for site response is evaluated in two sedimentary basins on the North Anatolian Fault Zone. For this purpose, fundamental frequencies of soils and corresponding amplitudes obtained from empirical horizontal-to-vertical spectral ratio curves from microtremors, weak motions and strong motions are compared with results from one-dimensional theoretical transfer functions. Theoretical transfer functions are computed using S-wave velocity profiles de...
Full waveform inversion for seismic velocity and anelastic losses in heterogeneous structures Askan Gündoğan, Ayşegül; Bielak, Jacobo; Ghattas, Omar (Seismological Society of America (SSA), 2007-12-01) We present a least-squares optimization method for solving the nonlinear full waveform inverse problem of determining the crustal velocity and intrinsic attenuation properties of sedimentary valleys in earthquake-prone regions. Given a known earthquake source and a set of seismograms generated by the source, the inverse problem is to reconstruct the anelastic properties of a heterogeneous medium with possibly discontinuous wave velocities. The inverse problem is formulated as a constrained optimization prob...

Citation Formats

M. Simav, H. Yildiz, A. Turkezer, O. Lenk, and E. Ozsoy, “Sea level variability at Antalya and Mentes tide gauges in Turkey: atmospheric, steric and land motion contributions,” STUDIA GEOPHYSICA ET GEODAETICA, pp. 215–230, 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/68060.