Table 5. Summary of source level data for mysticetes 

 (From Fish and Turl, 1976) 



Species 



(dB 



Source Level 

 , re 1 uPa at 1 



Comments 

 m) 



Reference 



Meqaptera novaeangliae 



138.6 

 148.6 

 155.4 

 (144.3-174.4) 



Mean 1/3-octave level 



at 5 kHz. 



Mean 1/3-octave level 



at 1 kHz 



Mean and range of 



broadband levels of 



various types of signals 



Levenson (1972) 



Eubalaena 

 qlacialis 



172-187 



Levels in the 25-2500 

 Hz band for "belch- like" 

 sounds. 



Cummings, Fish and 

 Thompson (1972) 



Eschrichtius qlaucus 



138-152 



Mean broadband levels 



for several different 



types of low-frequency 



signals. 



Highest level measured. 



Cummings, Thompson 

 and Cook (1968) 



Balaenoptera 

 musculus 



159.2 

 188 



Maximum broadband level 

 of clicks. 



Mean level of moans in 

 a 14-222 Hz band 



Beamish and Mitchell 

 (1971) 



Cunnings and 

 Thompson (1971) 



Balaenoptera 

 physalus 



173-181 



Source level for 20 Hz 

 pulses. 



Source level of 20 Hz 

 pulses thought to be 

 from B. Physalus, based 

 on source level calcu- 

 lations as cited by 

 Norris and Reeves (1978) 



Patterson and 

 Hamilton (1964) 

 Schevill, Watkins, 

 and Backus (1964) 



Balaenoptera 

 acutorostrata 



152.6 



Maximum broadband level 

 clicks. 



Beamish and Mitchell 

 (1973) 



A-29 



