Satisfactory data runs were processed for frequency-direction spectra 
following the basic premises for IMLE described by Davis and Regier’, and 
Pawka.’ Figures E31 through E38 are examples of trough subarray spectra 
and Figures E39 through E47 are examples of crest subarray spectra. When 
possible, two representative spectra for each sampling day are presented. As 
summarized in Table E5, all gauges were used for the lowest frequencies, but 
only the pressure gauge and two current meters were used for the highest 
frequencies. Figures E48 and E49 summarize the directional data from the 
trough and crest subarrays respectively. 
Table E5 
DELILAH Gauges Used in Directional Spectral Estimation 
Crest Subarray Gauges 
picnoie| » [vile le(~|-+|~l-|- || | 
S020 A 
Trough Subarray Gauges 
paca | ~ |e [-lv|-[-l-l-|-|~] +1 
TOES EE 9 es ea ae ei) 
Ee | | | | 
* Davis, R. E., and Regier, L. A. (1977). “Methods for estimating directional wave spectra from multi- 
element arrays,” Journal of Marine Research 35, 453-77. 
* Pawka, S. S. (1983). “Island shadows in wave directional spectra,” Journal of Geophysical Research 88, 
2579-91. 
Appendix E Stationary Instrument Data E43 
