[Hen] [I2-NEWS] Live TV-Quality Video of Lost City Expedition Available Via Internet2 Multicast

[Johnson, Bill]

Disclaimer;

Multicast is a technology not supported by most Commodity ISPs. It allows one source to send a single stream which gets multiplied by routers and switches along to way and can branch out to thousands of receive endpoints. This technology can be dangerous on networks which are not well behaved, so most chose not to activate it. Those who do use it, must have every piece of layer2 and layer3 hardware enabled for multicast.

Multicast is a feature supported by Internet2 and OneNet. OneNet does not send multicasts to our customers unless their IT Network staff have asked us to do so. Since all of OneNet's backbone is Multicast Enabled, it is an easy task for us to "turn it on" for any of our customers. 

Before you could view multicast from Internet2 such as the one below, you would need to check with your local IT Network department to see if Multicast is supported at your location. If your IT Network management chooses not to activate multicast on their network, you should understand that is their prerogative. Certain older switches and routers which may be on your networks might not support Multicast.

All that disclaiming done, the event below is just one of many interesting events being Multicast on Internet2. Enjoy...

Bill Johnson
Director of Network Operations - OneNet
Director - Netrad Infrastructure for CASA
President - Oklahoma Distance Learning Association
405-225-9444
cell 405-919=1718
video 164.58.250.185
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-----Original Message-----
From: Lauren B. Kallens [mailto:lkallens at internet2.edu <mailto:lkallens at internet2.edu> ]
Sent: Monday, July 25, 2005 11:01 AM
To: i2-news at internet2.edu
Subject: [I2-NEWS] Live TV-Quality Video of Lost City Expedition Available Via Internet2 Multicast


Live TV-Quality Video of Lost City Expedition Available Via Internet2 Multicast

Live TV-quality video from a 10-day undersea expedition to the hydrothermal vents field of Lost City will be multicast over Internet2 networks beginning July 23rd through August 1st.

The multicast address is 233.55.245.254 port 4000. Produced shows will take place each day at 10am, 12pm, 2pm and 4pm U.S. Eastern Time.

Video is being streamed from the NOAA Research Vessel Ronald H. Brown.
The ship departed Woods Hole, Massachusetts on July 16 and traveled nearly 3000 miles to the dive site located almost dead center in the Atlantic Ocean.

Dr. Bob Ballard, Dr. Dwight Coleman, Todd Gregory and the rest of the Institute for Exploration expedition team launched this mission to conduct round-the-clock explorations using IFE's robotic vehicles (ROV) Argus and Hercules. The ROVs are supported by a state-of-the-art shipboard control system that will send live high-definiton video, audio and scientific data to a shore-based command center at the University of Rhode Island, Graduate School of Oceanography. From there the transmissions are sent via Internet2 networks and satellite downlink to various scientific sites around the country, including the 18 Immersion Presents sites participating in the "live" broadcasts.

Explorations at Lost City will focus on 2 primary activities, collection of geologic and biologic data sets and fluid samples, and to provide educational programming via Immersion Presents to museums, aquariums and Boys and Girls Clubs nationwide.

Co-principal investigator on the expedition is Dr. Deb Kelley of the University of Washington. Dr. Kelley discovered the Lost City vents in December, 2000. These vents are totally different from the so-called "black smoker" vents first discovered by Dr. Ballard and others in 1977.

The chimneys in the Lost City are much taller than black smoker chimneys and are made out of calcium carbonate, the same mineral that forms stalactites and stalagmites in above-ground limestone caves, not the metal-rich minerals of the black smokers. The Lost City vents are on a flat-topped mountain on ocean crust that is more than 1.5 million years old, instead of the much younger seafloor volcanoes that normally host the black smoker systems. And, the tiny creatures at the Lost City vents thrive in alkaline fluids that at 40-90°C are much cooler than the acidic jets at up to 400°C emitted by black smokers.

More on the expedition to Lost City can be found by visiting the following
sites:

http://www.oceanexplorer.noaa.gov/explorations/05lostcity <http://www.oceanexplorer.noaa.gov/explorations/05lostcity> 
http://www.immersionpresents.org <http://www.immersionpresents.org> 




Contact:
Lauren Kallens
Internet2
lkallens at internet2.edu

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