USES THE LEAST SQUARES TECHNIQUE TO FIT AN EQUATION TO GEOGRAPHICALLY 

 DISPERSED DATA. OUTPUT INCLUDES PRINTED MAPS. AUTHOR — W.R. TOBlER. 



THE UNIVERSITY OF MICHIGAN 

 DEPARTMENT OF GEOGRAPHY 

 ATTN. DR. W. R. TOBLER 

 ANN ARBOR. MICHIGAN 48104 



MATHEMATICAL AND STATISTICAL ANALYSIS 



SBWRO (SHIPBORNE WAVE RECORDER ANALYSIS) LANGUAGE - FORTRAN IV 



COMPUTER - IBM 1800 SYS 

 (COPY ON FILE AT NODC) 



GIVEN VALUES OF THE HIGHEST AND SECOND HIGHEST CRESTS. THE LOWEST AND 

 SECOND LOWEST TROUGHS. THE NUMBER OF ZERO CROSSINGS AND THE NUMBER OF 

 CRESTS IN A SHORT RECORD FROM THE N.I.O. SHIPBORNE WAVE RECORDER, COM- 

 PUTES THE SPECTRAL WIDTH PARAMETER AND THE SIGNIFICANT WAVE HEIGHT AND 

 ALSO THE PREDICTED MAXIMUM HEIGHT IN A PERIOD OF THREE HOURS, AND 

 STORES THE RESULTS ON LINEPRINTER AND DISK. N.I.O. PROGRANi NO. 89. 

 AUTHOR — EILEEN PAGE. 



NATIONAL INSTITUTE OF OCEANOGRAPHY 

 WORMLEY. GODALMING, SURREY 

 ENGLAND 



HILOW (GENERATE ARBITRARY FILTER) LANGUAGE - FORTRAN IV 



COMPUTER - IBM 1800 SYS 

 (COPY ON FILE AT NODC) 



GENERATES A LOWPASS. BANDPASS. OR HI6HPASS FILTER DEFINED BY 3 PARA- 

 METERS. WITH OR WITHOUT ITS CONJUGATE, PUNCHES THE MULTIPLIERS ON 

 CARDS, AND LISTS ITS AMPLITUDE RESPONSE OVER THE FULL FREQUENCY RANGE. 

 N.I.O. PROGRAM NO. 158. AUTHOR — D.E. CARTWRIGHT. 



NATIONAL INSTITUTE OF OCEANOGRAPHY 

 WORMLEY, GODALMING, SURREY 

 ENGLAND 



SUBROUTINES DETRND, AUTCOV, CRSCOV, FOURTR LANGUAGE - FORTRAN IV 



COMPUTER - IBM 360/40 

 (COPY ON FILE AT NODC) 



A SET OF PROGRAMS DEALING WITH SPECTRA. DETRND REMOVES THE MEAN, OR 

 THE MEAN AND LINEAR TREND (SLOPE) FROM A TIME SERIES. AUTCOV COMPUTES 

 THE AUTOCOVARIANCE OF THE TIME SERIES. CRSCOV COMPUTES THE AUTO- AND 

 CROSS-COVARIANCES OF TWO SEQUENCES. FOURTR COMPUTES EITHER THE SINE 

 OR COSINE FOURIER TRANSFORM. SMOOTHING OF EITHER IS OPTIONAL. LISTED 

 AND DESCRIBED IN THE PUBLICATION 'WATER WAVE TEACHING AIDS'. WHICH 

 APPEARS AS TECHNICAL NOTE 13 OF THE M.I.T. HYDRODYNAMICS LABORATORY. 

 THESE ROUTINES ARE ADAPTED FROM A PROGRAM WRITTEN AT BELL TELEPHONE 

 LABS BY M.J.R. HEAlY (1962). 



PROF. RALPH H. CROSS 



ROOM 48-209 HYDRODYNAMICS LABORATORY 

 MASSACHUSETTS INSTITUTE OF TECHNOLOGY 

 CAMBRIDGE, MASSACHUSETTS 02139 



DIGITAL POWER SPECTRUM ANALYSIS LANGUAGE - FORTRAN IV 



COMPUTER - IBM 7090 



THE PROGRAM WAS ORIGINALLY INTENDED TO ANALYZE UNDERWATER SOUND. THE 

 HYDROPHONE OUTPUT IN ANALOG FORM IS FIRST DIGITIZED. THE PROGRAM THEN 

 COMPUTES THE POWER SPECTRUM ESTIMATE UTILIZING THE FAST FOURIER TRANS- 

 FORM. THE POWER IS COMPUTED FOR A LINEAR SET OF FREQUENCIES. THIS 



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