EXPLANATION OF OCEAN TEMPERATURE CHART Nc. 13. 



SANDT HOOK LIGHT-SHIP, NEW YORK. 



Observers : James CosGnovE, R. H. PRixcnARD. 



Location of station. — This ligtit-sbip is ancliored in 14 fatlioms of water, off fliG entrance to New York Bay, 6 miles 

 east of Sandy Hook, N. J., the nearest land, and Si miles south of Rockaway Beach, Long Island. It is distant about 

 70 miles northeasterly from Absecon light. The 15fathom curve forms a bight extending in towards New York Bay 

 entrance, and reaching nearly to the light-sliii), inside of which the depths decrease somewhat rapidly. The SO-fathom 

 curve is distant 16 miles; the 100-fathora curve, 95 miles. 



Geographical iwsition.—Ijatitude, 40° 26' (12") N. ; longitude, 7.3° 51' (42") W. 



Depth of water. — Fourteen fathoms. 



Bange of temperature (March 1 to January 1).-Air, 50° (31°.5 to 81°.5) ; surface, 41°.5 (33° to 74°.5). 



The range of air temperature is greater than at any of the three preceding stations, but the maximum is two 

 degrees lower than at Five-Fathom Bank, about the same as at Winter Quarter Sho-al, and two degrees higher than 

 at Absecon. The maximum surface temperature is slightly lower than at the preceding stations. 



Table showing the direction of the windi, by quadrants, for each month of the year, being the means of five years' observations. 



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