s 



Hydrographical Observations from the Danmark Expedition. 415 



S J £ line was allowed to run out freely; the 



^ '°. ^ H:^ amount of line run out in one minute thus 



•J o.§ -2 I indicated the rate of flow of the current in 



§ ' . .5 § I J:^ the layer from — 2 meters in depth. At 



■d-^ 2-Й -.2 the same time the direction of the bag was 



"-^ ° . « 2 I g ^ ascertained by bearings. 



"I Г- „ *" -öl The measurements show, that the flood- 



= [-•'-' 'iSS с л ti*^^ "^ tbe mouth of Øresund and Store 



Sc . ^c 0-Э Belt ran in a northerly direction, whilst the 



' 's g ' ~ a ' ^ --- ^^^ flowed in the opposite direction and the 



stream changed at the surface very nearly 



at the same time as the period of highest and 



^^S ^II^^So i,' Is lowest water. Further out in Øresund and 



Lille Belt the tidal streams met through the 





a 



b£l^^ 



ь ^ 



CO O] -tJ с 





: d 2 I 



C>] CO •* -* -2 о -g & 'E д 



§Æ So 



OJ ев en M 



"S ;qœ 3 entrances and the currents here were ir- 

 regular. In Stormbugt in the course of a 



=^S -^ii-gc-S '^tläs change of tide the current gradually turned 



so 



bDS-S.S cœ round the compass. 



"Ё& ■= ■=<=' J & S=5 Is In Danmarks Havn the tidal current 



°ShS s'lg-S^ "CiJ^S" flowed as shown in the following diagram: 



^ О og I B^ GERMANIA 





.^^^ШШ^: 



~5а5 "о SS 



es ■^] о Ö 





H 



.= ^ о S flood. 



■'^^1 fer-,..E ^И ^^ S-'ä ----ebb. 



In summer, after the rivers had been 

 ^ >„>" Щ -S^a running for some time, it was observed, 



^'1 G^SSh .^-S^ that the ebb was stronger than the flood at 



£s...c2-^2.„.. S? the surface and continued until somewhat 



;^'| : : : iz'i^'g : : "* after lowwater, due to freshwater flowing 



ib_jj ^??ii'^ " i H 0^* ^t t^'^ surface. 



œ E> ?! 5?o S. St3 In the deeper layers no direct current 



] >,§ measurements were undertaken owing to there 



M ^ I I I 11 being no available instruments of the kind 



sa 



X3 T3 



onboard, nor could these be constructed with 



the comparatively primitive means at dis- 



^|- posai; but some idea, approximately correct, 



rs^ of the currents there could be obtained from 



? I \ > \ i I 5рщ the observations on the mode of swinging 



of the water-bottle and plankton-net, when 



■O'-^Ol^^fMOt-tC'lTICO'^iO 



<c 



