418 



Tides in the Mediterranean and Adjacent Seas 



der Stok, in which he has only drawn short fragments of the co-tidal lines 

 protruding from the coast into the ocean, without trying (except in very few 

 cases) to connect these co-tidal lines from coast to coast. He too is firmly 

 convinced that progressive waves alone are responsible for the picture of the 

 phenomena. Dietrich (1944, p. 69) has recently given a presentation of the 



95° 100" 105° NO 



25° 130° 135° 140° 



Fig. 177. Co-tidal lines of the M 2 tide in the Indonesian Archipelago (referred to the upper 

 culmination of the moon in Greenwich), according to Dietrich. 



co-tidal lines for the M 2 and K x tide which is part of his presentation of the 

 tides of the oceans without, however, accompanying it by any further dis- 

 cussion. His two charts (the scale of which has been slightly enlarged) are 

 reproduced in the Figs. 177 and 178, but we cannot agree on all points with 

 his drawing of the co-tidal lines, nor with his interpretation of the observed 

 values. Table 58 gives a summary of the most important harmonic constants 

 of this area. 



The semi-diurnal M 2 tide penetrates from all sides into the Basins of 

 Indonesia; there seem, however, to be three points which are particularly 

 important for the development of the tides, (a) The wide strait to the north 

 between Formosa and Luzon, leading into the South China Sea. (b) The 

 areas between Mindanao and Halmahera, leading to the Celebes and Molukkes 

 Sea. (c) In the south, the straits between Timor and the Aroe Islands, con- 

 necting the Timor and Arafura Sea with the Banda Sea. The other entrances 

 between the group of Islands in the south and through the Strait of Malacca 

 seem to be only of minor importance. 



These three large straits who function as entrances are connected with 

 each other by three complicated "canals". 



