Specialty Devices, Inc., working with the Gas Hydrate Research Consortium directed by the Mississippi Minerals Resource Institute, has developed and installed a Severe Storm Monitoring System. The MAD SEA Storm Monitor was installed in approximately 1,000 meters of water depth at Mississippi Canyon 118 in the Gulf of Mexico on June 12, 2006. The Storm Monitor is to be recovered in November of 2006 at the conclusion of the hurricane season in the Gulf of Mexico. This web-page discusses the MAD SEA Storm Monitor and its capabilities. The Storm Monitor can also be used for marine mammal research and for monitoring man made acoustic signatures.
Develop a long term acoustic storm monitoring system and have it in place for the 2006 hurricane season in the Gulf of Mexico.
Monitoring of storm induced sound requires estimation of the frequency domain of interest, the dynamic range of amplitudes versus frequency and an understanding of natural and man made background noise which may interfere. Ideally, we would be able to measure calm sea natural back ground levels, be unaffected by man made interference and still be capable of recording sound levels resulting from a maximum storm event directly over the monitor location. Our frequency spectrum of interest is dictated by the sound generation spectrum from storms, by the acoustic transmission characteristics of the sea and by the frequency spectrum that provides the best indicator of storm intensity.
|Sampling Rate||2 kHz|
|Main Power Supply||6 volt and 12 vdc Alkaline batteries with 15 A-H|
|Power Supply Operational Life||291 days with standard battery pack|
|Anti-Alias Filter||1000 Hz low pass 2 pole|
|Hydrophone Freq. Range||1 Hz to 10,000 Hz|
|Hydrophone Sensitivity||-101 db re 1 uBar|
|Total preamplifier/Amplifier gain||72.9 db|
|Data storage Capacity||180 Days can be increased to 720 days|
|Data interface||serial high speed|
|Data Transfer||CF flash card|
|Operational Depth||1,500 meters|
|In Water Weight ( w/o cage)||6 lbs.|