Mesoscale eddies and their dispersive environmental impacts in the Persian Gulf

doi:10.1088/1674-1056/ab96a3

中国物理B ›› 2020, Vol. 29 ›› Issue (8): 84701-084701.doi: 10.1088/1674-1056/ab96a3

• SPECIAL TOPIC—Ultracold atom and its application in precision measurement • 上一篇下一篇

Mesoscale eddies and their dispersive environmental impacts in the Persian Gulf

Amin Raeisi, Abbasali Bidokhti, Seyed Mohammad Jafar Nazemosadat, Kamran Lari

1 Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran 1477893855, Iran;
2 Geophysics Institute, University of Tehran, Tehran 1417614418, Iran;
3 Department of Water Engineering, Oceanic and Atmospheric Research Center, Shiraz University, Shiraz 71444165186, Iran;
4 Department of Physical Oceanography, Faculty of Marine Science and Technology, Tehran North Branch, Islamic Azad University, Tehran 1987973133, Iran

收稿日期:2020-03-21 修回日期:2020-04-22 出版日期:2020-08-05 发布日期:2020-08-05
通讯作者: Abbasali Bidokhti E-mail:bidokhti@ut.ac.ir

Mesoscale eddies and their dispersive environmental impacts in the Persian Gulf

Amin Raeisi, Abbasali Bidokhti, Seyed Mohammad Jafar Nazemosadat, Kamran Lari

1 Faculty of Natural Resources and Environment, Science and Research Branch, Islamic Azad University, Tehran 1477893855, Iran;
2 Geophysics Institute, University of Tehran, Tehran 1417614418, Iran;
3 Department of Water Engineering, Oceanic and Atmospheric Research Center, Shiraz University, Shiraz 71444165186, Iran;
4 Department of Physical Oceanography, Faculty of Marine Science and Technology, Tehran North Branch, Islamic Azad University, Tehran 1987973133, Iran

Received:2020-03-21 Revised:2020-04-22 Online:2020-08-05 Published:2020-08-05
Contact: Abbasali Bidokhti E-mail:bidokhti@ut.ac.ir

摘要/Abstract

摘要： As the mesoscale eddies in oceans and semi-enclosed seas are significant in horizontal dispersion of pollutants, we investigate the seasonal variations of these eddies in the Persian Gulf (PG) that are usually generated due to seasonal winds and baroclinic instability. The sea surface height (SSH) data from 2010 to 2014 of AVISO are used to identify and track eddies, using the SSH-based method. Then seasonal horizontal dispersion coefficients are estimated for the PG, using the properties of eddies. The results show an annual mean of 78 eddies with a minimum lifetime of one week. Most of the eddies are predominantly cyclonic (59.1%) and have longer lifetimes and higher diffusion coefficients than the anti-cyclonic eddies. The eddy activity is higher in warm seasons, compared to that of cold seasons. As locations with high eddy diffusion coefficients are high-risk areas by using maps of horizontal eddy diffusion coefficients, perilous times and locations of the release of pollutants are specified to be within the longitude from 51.38°E to 55.28°E. The mentioned areas are located from the Strait of Hormuz towards the northeast of the PG, closer to Iranian coast. Moreover, July can be considered as the most dangerous time of pollution release.

关键词: Persian Gulf, mesoscale eddies, marine pollution, horizontal eddy diffusion coefficient

Abstract: As the mesoscale eddies in oceans and semi-enclosed seas are significant in horizontal dispersion of pollutants, we investigate the seasonal variations of these eddies in the Persian Gulf (PG) that are usually generated due to seasonal winds and baroclinic instability. The sea surface height (SSH) data from 2010 to 2014 of AVISO are used to identify and track eddies, using the SSH-based method. Then seasonal horizontal dispersion coefficients are estimated for the PG, using the properties of eddies. The results show an annual mean of 78 eddies with a minimum lifetime of one week. Most of the eddies are predominantly cyclonic (59.1%) and have longer lifetimes and higher diffusion coefficients than the anti-cyclonic eddies. The eddy activity is higher in warm seasons, compared to that of cold seasons. As locations with high eddy diffusion coefficients are high-risk areas by using maps of horizontal eddy diffusion coefficients, perilous times and locations of the release of pollutants are specified to be within the longitude from 51.38°E to 55.28°E. The mentioned areas are located from the Strait of Hormuz towards the northeast of the PG, closer to Iranian coast. Moreover, July can be considered as the most dangerous time of pollution release.

Key words: Persian Gulf, mesoscale eddies, marine pollution, horizontal eddy diffusion coefficient

中图分类号: (Eddy-viscosity closures; Reynolds stress modeling)

47.27.em

92.20.Ny (Marine pollution) 92.10.ak (Eddies and mesoscale processes) 66.10.C- (Diffusion and thermal diffusion)

Amin Raeisi, Abbasali Bidokhti, Seyed Mohammad Jafar Nazemosadat, Kamran Lari. Mesoscale eddies and their dispersive environmental impacts in the Persian Gulf[J]. 中国物理B, 2020, 29(8): 84701-084701.

Amin Raeisi, Abbasali Bidokhti, Seyed Mohammad Jafar Nazemosadat, Kamran Lari. Mesoscale eddies and their dispersive environmental impacts in the Persian Gulf[J]. Chin. Phys. B, 2020, 29(8): 84701-084701.

参考文献 27

[1]	Chao S Y, Kao W T and Al-Hajiri K R 1992 J. Geophys. Res. 97 11219 doi: 10.1029/92JC00841
[2]	Pous S, Lazure P and Carton X 2015 Cont. Shelf Res. 94 55 doi: 10.1016/j.csr.2014.12.008
[3]	Kämpf J and Sadrinasab M 2006 Ocean Sci. 2 27 doi: 10.5194/os-2-27-2006
[4]	Yao F and Johns W E 2010 J. Geophys. Res. 115 C11017
[5]	Torabi Azad M, Banazadeh Mahani M and Bidokhti A A 2000 J. Environ. Sci. Technol. 10 17
[6]	Bower A S, Hunt H D and Price J F 2000 J. Geophys. Res. 105 6387 doi: 10.1029/1999JC900297
[7]	Johns W E, Yao F and Olson D B 2003 J. Geophys. Res. 108 3391 doi: 10.1029/2003JC001881
[8]	Hegarete, P L, Carton X, Louazel S and Boutin G 2016 Ocean Sci. 12 687 doi: 10.5194/os-12-687-2016
[9]	Thoppil P G and Hogan P J 2010 J. Phys. Oceanogr. 40 2122 doi: 10.1175/2010JPO4227.1
[10]	Reynolds R M 1993 Mar. Pollut. Bull. 27 35 doi: 10.1016/0025-326X(93)90007-7
[11]	Vallis, G K 2005 Atmospheric and Oceanic Fluid Dynamics (Cambridge:Cambridge Press) Chap 10 p. 450
[12]	Frengner I, Münich M, Gruber N and Kutti R 2015 J. Geophys. Res.:Ocean 120 7413 doi: 10.1002/2015JC011047
[13]	Xiao Y, Li Z, Li J, Liu J and Sabra K 2019 Chin. Phys. B 28 054301 doi: 10.1088/1674-1056/28/5/054301
[14]	Blain C A 2000 The 6th International Conference. American Society of Civil Engineers (New York, USA) p. 74
[15]	Bidokhti A A and Ezam M 2009 Ocean Sci. 5 1 doi: 10.5194/os-5-1-2009
[16]	Ezam M, Bidokhti A A and Javid A H 2010 Ocean Sci. 6 887 doi: 10.5194/os-6-887-2010
[17]	Noori R, Abbasi M R, Aamowski J F and Dehghani M 2017 Estuarine Coastal Shelf Sci. (ECSA) 197 236
[18]	Sabetahd Jahromi A A, Lari K, Sultani M and Raeisi A 2011 The 13th Marine Industry Conference (Kish, Iran 8-10 November 2011) p. 249
[19]	Mackay D, Peterson S and Nadeau S 1980 National Conference on Control of Hazardous Material Spills (Louisville, USA 13-15 May 1980) p. 364
[20]	Huang J C 1983 Proceeding of the 1983 Oil Spill Conference (Washington DC, USA 28 February-3 March 1983) p. 313
[21]	Lonin S A 1999 Spill Sci. & Tech. Bull. 5 331 doi: Sci.
[22]	Haj Rasouliha O, Hasanzadeh E and Rezaei Latifi A 2013 J. Climatology Res. 15 93
[23]	Chelton D B, Schlax M G and Samelson R M 2011 Prog. Oceanogr. 91 167 doi: 10.1016/j.pocean.2011.01.002
[24]	Fang F and Morrow R 2003 Deep-Sea Res. 50 245
[25]	Chaigneau S, Gizolme A and Grados C 2008 Progr. Oceanogr. 79 106 doi: 10.1016/j.pocean.2008.10.013
[26]	Rahnemania, A, Bidokhti A A, Ezam M, Lari K and Ghader S 2019 J. Appl. Fluid Mech. 12 1475 doi: 10.29252/jafm.12.05.29770
[27]	Raeisi A, Bidokhti A A, Nazemosadat S M J, Lari K and Sabetahd A A 2017 The 19th Marine Industry Conferences (Kish, Iran 11-13 December 2017)

Mesoscale eddies and their dispersive environmental impacts in the Persian Gulf

Mesoscale eddies and their dispersive environmental impacts in the Persian Gulf

RichHTML

PDF (PC)

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献 27

相关文章 1

Metrics

本文评价

推荐阅读 0