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4 3 2 SLP (VPSA) 38 80 60 40 1 0 1 2 3 SL ∆(VP−SA) (cm) 20 0 −20 −40 −60 4 30/09 10/10 20/10 30/10 09/11 19/11 29/11 09/12 19/12 Date in 2006 (dd/mm) A −80 −15 −10 −5 0 5 10 15 38 (m/s) Figure 4.29: A: Standardised time series of 38 (grey) and SL ∆(Ventspils-Sassnitz) (black). B: Regression wind 38 (Arkona-Hoburg) with SL ∆(Ventspils-Sassnitz). The two ne lines correspond to the 95% condence interval of the regression line (thick line). B wind towards west (38
Depth (m) 40 45 50 55 60 4 3 2 1 0 1 38 SFN/SFS(6671) 65 70 75 R(U38/uSFN) R(U38/uSFS) R(SLPVP_SA/uSFN) R(SLPVP_SA/uSFS) 0.65 0.6 0.55 0.5 0.45 0.4 0.35 0.3 0.25 Correlation Coefficient (R) A 2 3 4 30/09 10/10 20/10 30/10 09/11 19/11 29/11 09/12 19/12 Date in 2006 (dd/mm) Figure 4.30: A: Correlation coecients of 38 with u SFN (blue)/ u SFS (green) and SL ∆(Ventspils-Sassnitz) with u SFN (cyan)/ u SFS (black) in 1 m steps between 43-71 m. B: Standardised time series of 38 (grey) and depth averaged mean current of SFN and SFS (66-71 m, black). B deduce a dependency between the sea level dierence and the deep currents in the Stolpe Channel? Looking at the ADCPs individually on both sides of the channel, their correlations with 38 as well as SL ∆(VP-SA) reveals an interesting picture. Here, in (Fig. 4.30 A) the correlation coecients of 38 with u SFN and with u SFS between 43 - 71 m show how the correlation between the currents and the regional wind changed with every depth layer. The correlation was repeated for SL ∆(VP-SA) with u SFN and u SFS to illustrate the changing connection between the currents and the sea level with depth. All correlations were calculated in 1 m steps. It becomes apparent that the regional wind had a greater inuence on SFN's east velocity component than the sea level down to a depth of 64 m, with the negative correlation being highest between 43 - 50 m. The inuence of the sea level increased from 64 m and gained priority down to 70 m. Comparatively, at SFS the inuences of the regional wind and the sea level between 43 and 58 m were rather small; neither had a signicant dominant eect on the currents. Although, the correlation of both the wind and the sea level with the u-component of SFS increased continuously with depth, apart from a sharp jump at 59 m. This jump coincides with the sharp salinity/ density gradient in Fig. 4.8. From 62 m down to 70 m the inuence of the sea level increased slightly in contrast to the regional wind. It can be concluded the inuence of the wind in the upper layer is predominant at the northern side of the channel, whereas on the southern side the Ekman transport induced by the Coriolis 91
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No 88 2012 Spatiotemporal Scales of
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Meereswissenschaftliche Berichte MA
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Abstract The Baltic Sea is surround
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Contents Abstract Contents List of
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Acknowledgement 109 Appendix 111 vi
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M-7/M-8 Mesodyn hydrographic snapsh
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List of Figures 1.1 Baltic Sea - ba
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4.32 Regression sea level dierence
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1. Introduction 1.1 Investigations
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circulation above topographic anks
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58 o N 190 230 210 100 75 100 100 7
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y 'new' deep water. For instance, i
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events. During and after such event
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this inow event was classied as 'mo
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Scale (PSS-78), roughly by 0.5%, as
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(Acoustic Doppler Current Proler) a
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for the southernmost zonal section
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whereas the length of the NE time s
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have a thickness of only 1.5 m in o
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dependent salt volumes for the deep
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7 6.5 a Temperature ( o C) 6 5.5 5
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Potential Temperature ( o C) 8 7 6
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inowing waters masses with variable
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following these bounds will be used
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60 80 100 −45 −50 −55 Pressur
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Monitoring Station BMP271 60 80 100
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Date 31.8.1997, 03.11.1997, 03.11.1
Page 55 and 56: 190 a 200 Depth (m) 210 220 230 240
Page 57 and 58: Date (ID) 〈S〉 V (g/kg) 〈θ〉
Page 59 and 60: deviation of the temperature uctuat
Page 61 and 62: 4. The Deep Circulation in the EGB
Page 63 and 64: Depth (m) 50 100 150 200 17 16 4.6
Page 65 and 66: For this reason, the displayed temp
Page 67 and 68: 6.4 6.3 178 m 208 m 223 m Daily Tem
Page 69 and 70: The deep parts of the basin are exp
Page 71 and 72: On the 29 September 2006 between 60
Page 73 and 74: In the geostrophic balance horizont
Page 75 and 76: captured eastward velocities up to
Page 77 and 78: Figure 4.11: Modelled current veloc
Page 79 and 80: SFS and SFN. At the southern ank a
Page 81 and 82: Mean Volume Transports Mean Volume
Page 83 and 84: 160 170 180 Volume of EGB below 170
Page 85 and 86: Basin 55.9 ◦ N. From there the bo
Page 87 and 88: Volume transports (km 3 /d) 15 10 5
Page 89 and 90: Gdansk Basin happened a few weeks e
Page 91 and 92: needs some explanation, since the l
Page 93 and 94: and Fig. 4.24 and displayed in Tabl
Page 95 and 96: Salt (t) 8 6 4 2 0 2 4 6 8 x 10 10
Page 97 and 98: Time Period Stolpe Channel at 17.5
Page 99 and 100: Modelled volume transport through S
Page 101 and 102: discovered that most of the varianc
Page 103 and 104: to the right (perpendicular) to the
Page 105: of salty and often well oxygenated
Page 109 and 110: a correlation coecient of R=-0.68 a
Page 111 and 112: 5. Discussion and Conclusions 5.1 D
Page 113 and 114: graphic cross-sections, conducted i
Page 115 and 116: direction as the wind. The deep lay
Page 117 and 118: Bibliography Axell, L. B., 1998: On
Page 119 and 120: Griffies, S. M., R. C. Pacanowski,
Page 121 and 122: Matthäus, W., 1993: Major inows of
Page 123 and 124: Rubio, A., D. Gomis, G. Jordà and
Page 125 and 126: Zhurbas, V., I. Oh and V. Paka, 200
Page 127 and 128: Appendix Current speed and directio
Page 129 and 130: Current speed and direction (cm/s)
Page 131 and 132: 2 1.5 1 Cumulative volume through S
Page 133 and 134: Volume (km 3 ) 2.5 2 1.5 1 0.5 0
Page 135 and 136: 10 3 Regional Wind 7 Power Spectra
Page 137 and 138: NE along−slope at 178m 10 2 10 1
Page 139 and 140: Meereswissenschaftliche Berichte MA
Page 141 and 142: 26 (1997) Lakaschus, Sönke: Konzen
Page 143 and 144: 51 (2002) Wasmund, Norbert; Pollehn
Page 145 and 146: 78 (2009) Wasmund, Norbert; Pollehn
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Baltic Sea

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