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,to (b) Table of oodel Dreans Model Overall Mean I I Exanination of these lesults shous that both the vartable proportlonal loss (V.P.L.) nodel and constant proportionat loss noatel tC.p.r,.t signlficantly better t_han the o-index nodel at lhe 5! Ievel of "." siqniflcance, Desplte the lower vafue of rnean objective function !o! the V,P.I,. eodel the dlf,ference betneen lt and the C.p.f. moatel 1s not slgnif,icant. The test above assutoes that the error terns ale nofim11y atistributed, A paramete!-free t€st (Frietlnal, 1937) qave the sarDe resutt. 5: COIIPARISON OA SUAIACE ROT'TINC MODEI,S Thj.s section involved the participants for the dajor part of the duratlon of the lrorkshop, The ain \ras to perform analyses uslng the dlffelent surface louting models avaiLable, and thus to draw some conclusions a.bout their relatlve merlts. It lras necessaly th€n to treat each of the nodels in the sarne vtay and conclustons flon S€ctions 3 antl 4 were used as a basls for these analyses. In thts respect, the constant proportional loss subnodel $as used in all cases and optlnisatiorachieved by derivj.ng optinun paraneter values for each indlvidual event anal taki-ng the arlthmetlc nean for a given catchrent, As before, volumes have bee$ forced. The dlfferent dodel,E have f!or0 one to thlee paraneters. llhele t-here is nore than one paraneter, a high degree of intercorrelation is generally observed (van den aerg, 1977r Kidd, 1978) which nakes optlrDisation of Bore than one palaDete! dtfflcultr anal, in tnis case, it ls \rnlikel-y tlxat realistic lelationshlps bet{een Eodel paraheters and catchnent characteristics could be obtalned for rnore than one par.rheler of a qiven oodel. !'or thls reason, l! was decialed to fix aII but one paraneter for each eodel. As such, while diffelent nodels have different nunrbers of paraDeters, they all have the san€ nuDber of degrees.of freedom duling the optirnlsatlon process. ltlere was a total of elghleen catchnents for i,rhlch the analyses could be unalertaken. of these eighteen, fou! catchnenes l3OL, 2052, 42'tG, 44771 \tete irithalrawn froD the optfuoisation process and useat f,or independent testing. It !ra6 declded that tl|e laatn codparatLve test Bhoulil be I I I I I t I I I t t I I I I I I I
I t I I I I I I I I I I I t T I I I I ba6ed on the petfo:danc€ on t}le indep€nalent crtchEanta of each !od.I (lnco4)orating t}le p6ra!.te! v. catclu.nt chrtrctallltlct !61'atlonthlP aLrlved fEd tJre other foutte.n). fh€ co@n lre.lt6nt of the flr3t clx BoaLl6 ls al€scrl.bed b.Io$. Model 7 (lrnlt aydrogsaPh) eas tleatcal s
Page 1 and 2: - I I I I I I I I I T I I T I I I I
Page 3 and 4: I I I I I I I I I I I I I I I I CON
Page 5 and 6: I I 'l I I t I I f I I I t I I T I
Page 7 and 8: I t I I I I I I I I I I I I I ltr
Page 9 and 10: T -l 'l fhe $ork6hoP confin€tl lt
Page 11 and 12: I I 't t t I T I t t I I I I I I t
Page 13 and 14: I I "t 500 I I I t I I I I t I I I
Page 15 and 16: I I -f t T I I T t I T I T I t I I
Page 17 and 18: I t t T I I I T t I t l I I I I I I
Page 19 and 20: E t I I I T T I T t I I I I T I I I
Page 21 and 22: I t I I I T I r t I I I t t I I I I
Page 23 and 24: I lr ll lr ll ll t I t I I I t I I
Page 25: I t I I I I I I I t t shlch l,r cqu
Page 29 and 30: t I 't L - 1.n9th of tlo{ 1r !, k ,
Page 31 and 32: I I I t I I t I I I I I I I I t I I
Page 33 and 34: I I t I I I I t r t I I I I t t I I
Page 35 and 36: t t t I I I I I I I I t I I I I I I
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Page 39 and 40: I I I I I l I I I I I I t I I t I I
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Page 43 and 44: t I I I I I t I I I I I I I I I I I
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Page 49 and 50: I I I I t I t t I I I I I t I t I I
Page 51 and 52: I :;; i g8 @aon 66aO da6o6n q1fq6o^
Page 53 and 54: HE ! 3d g E '.6 +f lfri?ilol irooor
Page 55 and 56: I I t I t I t I I t I t I I t I I I
Page 57 and 58: I I : I I I I I I t I I I t I I I I
Page 59 and 60: I t I I I I I I I I I t I t t I I I
Page 61 and 62: I I I I t I I I t I I t I I I I t I
Page 63 and 64: T I I T t I T T T T T T I T I I I I
Page 65 and 66: I I I I I I I T I I t I ! REFEREIEE
Page 67 and 68: I T I I I I t I I I I I I I I I I I
Page 69 and 70: T I I I t t I I t I t T I I I I I I
Page 71 and 72: II .l I 't I t I I a: I I I --^-.r-
Page 73 and 74: I I I I t I T I I I I t I I I I I I
Page 75 and 76: t I I I = sinul-atlon run 2 = optlm
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I I t I I t I t t I t t I I I I I 5
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t I I I I I I t .t t I t I t I I AP
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I 't I I I I I I I I I I t I I I I
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t I 'l t I I I I I I I t t I I I I
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t 'l 't I I I I I I I I I t I t I I
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I 'l 't t t I I t I .l I I I I I I
Page 89 and 90:
I 't 'l ' ?lrl I I t I I t t I t t
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