All things related to multicast

["Doros, Brian" <>]

Friends,

We are currently multicasting this years expedition from the Black Sea and Santorini on 233.56.12.2:5501

The expedition has several legs, the main one taking place in June where IFE will be collaborating with a team of researchers from the Hellenic Centre for Marine Research, Greece (HCMR), the Institute of Geology and Mineral Explorations in Athens, and the University of Rhode Island (URI) to support and expand on a National Science Foundation-funded geophysical research project in and around the island of Santorini.  The explosive Theran eruption in the Aegean Sea in the Late Bronze Age was the largest natural catastrophe to impact ancient civilizations of the Mediterranean region and one of the largest explosive events during the Quaternary. The eruption led to major changes in the structure and morphology of the volcano caused by caldera collapse and massive volcaniclastic sediment influx into the surrounding sea.  

Since the Bronze Age eruption, volcanic activity has led to the formation of two new islands within the caldera (Nea Kameni and Palaea Kameni) and a satellite cone (Kolumbo) to the northwest of the caldera. As part of the NSF-funded project, the team will carry out geophysical and photographic surveys of the submarine features of Santorini volcano using side-scan sonar, sub-bottom profiler, and the Institute for Exploration’s ROV systems. The objectives will be to refine the seismic stratigraphy around the volcano and relate it to sedimentary processes, identify current depositional and erosional processes on the flank of Santorini and adjacent basins, search for the formation of mineral deposits in the submarine caldera, attempt to identify the Bronze Age coastline and configuration of the island prior to the c1640 BC eruption and caldera collapse.

^{Underwater imagery from the ROVs originates in HD and then is downcoverted due to bandwidth considerations, Deck cameras  all originate in SD. Video is MPEG2 encoded using Tandberg's E5720s then 3 ASI streams are multiplexed and encapsulated via a Tandberg TT6120 MediaLink. Video PIDs are 308, 309 and 310 respectively. The signal is received via staellite into WorldCom's teleport, Andover Maine . Then privet IP to URI where it its picked up on Northern Crossroads then out on to Abilene via our friends in New York.}

^{This stream will be available untill June 20}

 

^Enjoy

^Regrads,

^{Brian Doros}