Displaying items by tag: Communications

4th July 2013

New Emergency Info System Put Through Its Paces

#Rescue - The Irish Coast Guard and the RNLI were among the emergency services putting some new communication technology to the test last month.

As Phys.org reports, the emergency exercise in Malahide Estuary was designed to test the effectiveness of REACT, or Resource for Emergency services to Access Command and control data using satellite and hybrid Technologies.

The system, funded by the European Space Agency (ESA), employs satellite, mobile and other communications systems to maintain a constant open channel between different response services, even if one network goes down during a crisis.

Rescue teams in the field can also remain in two-way multimedia contact with co-ordinators in the control room to ensure the right people are where they need to be as quickly as possible.

Ritchie Hedderman, head of operations at the Dublin Fire Brigade, which also took part in the exercise, said: "In the event of a major emergency, secure and reliable communications are vital to the emergency services.

"I feel that the satellite communications in time will prove to be the primary and preferred means for communicating as it can supply voice, video and data back to regional and national control centres where strategic commanders can assess situation on the ground and provide the back up resources in order that a successful conclusion to the emergency can be obtained."

Phys.org has much more on the story HERE.

Published in Rescue

Tagged under

Seawater Antennas Not Just Science Fiction

Communiations on the ocean could be vastly improved by a surprising method straight out of the sci-fi books - antennas made out of seawater (SEE VIDEO BELOW).

The US Navy is already engineering a revolutionary scheme to replace its bulky warship communications arrays with antennas composed of jets of seawater shot through electromagnetic hoops.

The salt in the water is the key component that allows the water jet to conduct electronagnetic signals just like a standard metal antenna. Frequency adjustments can be easily made by controlling the height and width of the water stream.

Popular Science speculates that the antennas could serve as compact emergency antennas for civilian watercraft or communication systems on offshore oil rigs.

Published in Marine Science

Tagged under

Forty Foot Swimming Spot on Dublin Bay

The 'Forty Foot' is a rocky outcrop located at the southern tip of Dublin Bay at Sandycove, County Dublin from which people have been swimming in the Irish Sea all year round for 300 years or more. It is popular because it is one of few spots between Dublin city and Greystones in County Wicklow that allows for swimming at all stages of the tide, subject to the sea state.

Forty Foot History

Traditionally, the bathing spot was exclusively a men's bathing spot and the gentlemen's swimming club was established to help conserve the area.

Owing to its relative isolation and gender-specific nature it became a popular spot for nudists, but in the 1970s, during the women's liberation movement, a group of female equal-rights activists plunged into the waters and now it is also open to everyone and it is in the control of Dun Laoghaire Rathdown County Council.

Many people believe that swimming in extremely cold water is healthy and good for the immune system.

Is it safe to swim at the Forty Foot?

The Forty-Foot is a great place to swim because there is always enough water to get a dip but like all sea swimming, there are always hazards you need to be aware of. For example, a lot of people like to dive into to the pool at the Forty-foot but there are submerged rocks that can be hazardous especially at low water. The Council have erected signs to warn people of the underwater dangers. Other hazards include slippy granite cut stone steps that can often be covered with seaweed and of course marine wildlife including jellyfish that make their presence felt in the summer months as do an inquisitive nearby Sandycove seal colony.