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Table 5.2 that the SNR eases of 10 dB and 30 dB are statistically equivalent. Hence, an SNR af 10 dB may be &dent for the estimation of the radial currene from radar data coueeted during day-time operation. Since these dues obtained Figure 5.4 Comparison of currenh estimated tom Buoy* 1 (dotted line) and 2 (duhed Lbe) and the error-barred radar data (*). wer a wide variety of oceanic conditions, as is el- tom the wind data appearing in Figure 5.5, it is apparent that the r dts were independent of the sea state mnditionr experienced. Prior invenigationr have provided evidence of discrepancies in radar-derived cur- 59
Figure 5.5. Wind '.eiocitles for position 4 6 14' N and ST IS' W during the experimental period rest. when wind a d tide are in opposite dirsct~oo. (Lawrenee and Smith (301) and when cmeet shear, coincident anth wind reversals, occurs (Essen et ol. (341). How- ever, in this c- there arss no evidence that these moditiorw were present when the buoys were being interrogated by the satellite. If they did edrt, they were not observed in the eomparjson. Thus, anomalies ohserved by Lamence and Smith (301 and E m et al. (341 may have resulted b m the fact thu, in the experiments cited, current meters provided gromdtruthing. The nurent meters m e moored at depths well below the &/4a law, to which the radar measurement. are sensitive, whde the drifters used in the wriment related to this thesis rerponded to about the top metre of ocean. hother factor which might be expected to cause discrepancies in 60
Page 1:
CENTRE FOR NEWFOUNDLAND STUDIES TOT
Page 6 and 7:
Abstract Esrlm=r#oo of ocean surf-
Page 8 and 9:
Acknowledgements Quite a number of
Page 10 and 11:
Contents Abstract List of Figures L
Page 12 and 13:
5.2 Direct Radial Surface Current C
Page 14 and 15:
3.4 System architecture of Cape Rae
Page 16 and 17:
List of Tables 5.1 Summary of stati
Page 18 and 19:
List of Symbols d : Distance irom r
Page 20 and 21:
Chapter 1 Introduction The monitori
Page 22 and 23:
southward. In t k example the same
Page 24 and 25:
1.2 Conventional Methods for Measur
Page 26 and 27:
iceberg motion, a better relationsh
Page 28 and 29: magnitude of the radid component is
Page 30 and 31: Rice 1241, Barrick [I] developed an
Page 32 and 33: ange broad and narrow-ham systems (
Page 34 and 35: the shon-r- radar is quite diEerent
Page 36 and 37: of a chapter. Thig dso provides an
Page 38 and 39: 2.2 Radial Surface Currents 2.2.1 T
Page 40 and 41: Figure 2.1: Radw Spectrum (solid li
Page 42 and 43: intervals of Ar and A.9, where thee
Page 44 and 45: Figure 2.3: Wan Q is mbdivided into
Page 46 and 47: The abwe system of equations is swe
Page 48 and 49: Chapter 3 Experimental Data 3.1 Int
Page 50 and 51: e built at other eoastd sites such
Page 52 and 53: Since the mean currents within mast
Page 54 and 55: Figure 3.4: System architecture of
Page 56 and 57: spatid variability and to check sys
Page 58 and 59: oth of these techniques ean then be
Page 60 and 61: the dominant, or 9-, peaks of the s
Page 62 and 63: modelled, since they are known quan
Page 64 and 65: Sine the drifter estimates m e mnst
Page 66 and 67: 4.6.2 Selection of Algorithmn Param
Page 68 and 69: subtended by the b- increases in sb
Page 70 and 71: simplib the analysis by converting
Page 72 and 73: for then beams is therefore 3, 5 an
Page 74 and 75: with the graphs are from a linear r
Page 76 and 77: Fiere 5.2: Scattergrams of radid su
Page 80 and 81: m-ments deliwred by radar and buoys
Page 82 and 83: Figure 5.6: Scattergrams of simulat
Page 84 and 85: Figure 5.7: Scattergrams of -tor me
Page 86 and 87: size. In other words, the algorithm
Page 88 and 89: tem, which is a programmable fsture
Page 90 and 91: Radii vetocify [cws) - Radar Figure
Page 92 and 93: ocean surface m nts where the curre
Page 94 and 95: Chapter 6 Conclusions 6.1 Direct Ra
Page 96 and 97: gential component estimate, wen wit
Page 98 and 99: One of the goals of this thesis has
Page 100 and 101: Future work dl also deal with the f
Page 102 and 103: [I4 D. Diemand, E. Faemer, and J. B
Page 104 and 105: (461 D. Barriek, M. Evans, and B. W
Page 106 and 107: DATE (LOCAL) EVENT Comments shorn 6
Page 108 and 109: TIME - DATE (LOCAL) EVENT Comments
Page 110 and 111: The tape was mated by using the DEC
Page 112 and 113: Where DATLOG - Array of 32x3 bytes
Page 114 and 115: Appendix C Catalogue of the NRSL Ra
Page 116 and 117: Date (1992) 11/11 12/11 13/11 14/11
Page 118 and 119: Time I FFT 1 - Date 01/11/92 02/11/
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