Lack of backup satellite and cable links in the wake of Tonga’s volcanic eruption at the weekend reignites debate over the government’s plans to secure communications.

Communication with Tonga remains intermittent after the Hunga Tonga-Hunga Ha’apai eruption and tsunami severed the kingdom’s undersea cable connection with the rest of the world.

The crisis has renewed debate over previous government decisions which have been the subject of controversy and court cases.

It could be weeks before services are fully restored.

The 827km cable between Tonga and Fiji was cut when the volcano exploded. The break is located 37km from the capital, Nuku’alofa.

A cable connecting Tongatapu to other islands in the archipelago has been severed about 47km from Nuku’alofa.

A submarine cable repair ship is expected to sail from Papua New Guinea in the next few days.

Some communication with Tonga is possible via satellite. It is understood some people have been able to use the University of the South Pacific’s satellite connection to contact New Zealand from Ha’apai.

A New Zealand resident in Mangawhai, north of Auckland, has been in contact with his colleagues in Tonga via satellite text phone, 1News reported today.

However, Tonga Cable Ltd chair Samiuela Fonua said the lingering ash cloud was continuing to make even satellite phone calls abroad difficult.

Fonau said Tonga had been talking with New Zealand about establishing a second international fibreoptic cable, but any long-term solution was difficult.

The Kacific controversy
The government of the late prime minister ‘Akilisi Pohiva believed the best option was for Tonga to spend its money in building a satellite back up service.

The Pohiva government had made a 15-year deal with Kacific to establish a satellite backup link, but this was cancelled by the Tu’ionetoa government.

As Kaniva News reported in June last year, Kacific Broadband Satellites International Ltd provided emergency broadband services to Tonga when the undersea cable was severed by a ship’s anchor in 2019.

The Tongan government and its subsidiary Tonga Satellite Ltd later signed an agreement with Kacific for the supply of satellite broadband for a fee of US$5.76 million, which was due on June 15, 2019.

The fee was not paid and the company took Tonga to court in Singapore to enforce payment of the debt. The government then tried to take TSL off the kingdom’s company registry. This was overturned by the Tongan Supreme Court.

“We came to Tonga’s aid during its hour of need,” company CEO Christian Patouraux said at the time.

“It is deeply disappointing that Kacific has to undertake legal proceedings.

“The Tongan Government has benefited from millions of dollars of payments from international aid and infrastructure agencies to fund e-government initiatives and strengthen digital access over the last 10 years.”

The Hawaiki deal
The current Prime Minister, Siaosi Sovaleni was at the centre of a controversial deal with internet provider Hawaiki when he was Minister of Environment and Communications.

Sovaleni signed a TOP$50 million (NZ$32.5 million) contract.

Tonga paid TOP$6 million (NZ$4 million) so that the Hawaiki cable connecting New Zealand and Australia to Hawai’i and Los Angeles was connected to the Vava’u fibre cable in Tonga.

However, in 2019 Tonga Cable Ltd (TCL) director Paula Piveni Piukala and Minister of Trade and Economic Development Tu’i Uata were sent to Auckland to seek advice on the deal.

Uata said TCL had questioned whether the large sums being paid from taxpayers’ money were justified.

Piukala said at the time it “did not make sense” to pay such a large amount of money just in case the cable might be damaged in the future.

Tonga also had an agreement with French company Alcatel for the provision of a fibreoptic cable system connecting Nuku’alofa and Vava’u with a branch to Ha’apai.

The World Bank
The World Bank has funded $50 million for Tonga’s high-speed internet cable which was launched in 2013.

Tonga asked the bank to also fund a back up, or redundancy, cable but the bank said it was not financially viable.

Kalino Latu is editor of Kaniva Tonga. Asia Pacific Report collaborates with Kaniva News.

Article by AsiaPacificReport.nz

It could be weeks before Tonga’s crucial undersea communications cable – which connects it to the world – is back online.

The cable carries nearly all digital information including the internet and phone communications in and out of Tonga.

It was damaged after the Hunga Tonga-Hunga Ha’apai volcanic eruption nearby on Saturday.

Dean Veverka is director of the International Cable Protection Committee and chief technical officer for Southern Cross Cables — which owns two other cables in the area.

The Tongan cable, which is part-owned by the Tongan government, has broken about 37km off Tonga, he said.

The repair requires a ship which is currently in Papua New Guinea, about 2500 km away, so it could be a couple of weeks before the cable is back up and running.

“It’s very serious because the satellites can only handle … a small percentage of the traffic requirements out of any country.

“These days submarine cables carry about 99 percent of all communications between countries.

Limiting Tongan communications
“It will be quite limiting the communication to Tonga for a fair while.”

It could cost anywhere from US$250,000 upwards to repair, he said.

In the meantime, satellite communications appear to be disrupted by the massive ash cloud thrown up by the volcano.

NZ Joint Forces commander Rear Admiral Jim Gilmour told RNZ News on Monday the communication problems — likely from the ash– prevented pictures taken during the reconnaissance flight being sent back to New Zealand for analysis from the air.

It had to be done once the plane landed back in New Zealand last evening.

The Tonga cable connects into Suva in Fiji, and from there to the Southern Cross cable onto New Zealand, Australia and the US.

This article is republished under a community partnership agreement with RNZ.

Article by AsiaPacificReport.nz

In the wake of a violent volcanic eruption in Tonga, much of the communication with residents on the islands remains at a standstill. In our modern, highly-connected world, more than 95 percent of global data transfer occurs along fibre-optic cables that criss-cross through the world’s oceans.

Breakage or interruption to this critical infrastructure can have catastrophic local, regional and even global consequences.

This is exactly what has happened in Tonga following Saturday’s volcano-tsunami disaster. But this isn’t the first time a natural disaster has cut off critical submarine cables, and it won’t be the last.

The video below shows the incredible spread of submarine cables around the planet – with more than 885,000 km of cable laid down since 1989. These cables cluster in narrow corridors and pass between so-called critical “choke points” which leave them vulnerable to a number of natural hazards including volcanic eruptions, underwater landslides, earthquakes and tsunamis.

Animation of spread of global submarine cable network between 1989 and 2023. Video: ESRI

What exactly has happened in Tonga?
Tonga was only connected to the global submarine telecommunication network in the last decade. Its islands have been heavily reliant on this system as it is more stable than other technologies such as satellite and fixed infrastructure.

The situation in Tonga right now is still fluid, and certain details have yet to be confirmed — but it seems one or more volcanic processes (such as the tsunami, submarine landslide or other underwater currents) have snapped the 872km long fibreoptic cable connecting Tonga to the rest of the world.

The cable system was not switched off or disconnected by the authorities.

This has had a massive impact. Tongans living in Australia and New Zealand cannot contact their loved ones to check on them. It has also made it difficult for Tongan government officials and emergency services to communicate with each other, and for local communities to determine aid and recovery needs.

Thank you all for the messages. No word from my Father or Family in Haapai. All communication in Tonga is out.
I have setup a fundraiser, link in bio for anyone wanting to help. Whilst I can’t assist family at this moment I will focus on country as more Information comes out. pic.twitter.com/1MCtnH5CNw

— Pita Taufatofua (@pitaTofua) January 15, 2022

Telecommunications are down, as are regular internet functions – and outages keep disrupting online services, making things worse.

Tonga is particularly vulnerable to this type of disruption as there is only one cable connecting the capital Nuku’alofa to Fiji, which is more than 800km away. No interisland cables exist.

It could be weeks before Tonga’s crucial undersea cable – which connects it to the world – is back online.https://t.co/5FmWdfJorc

— RNZ Pacific (@RNZPacific) January 17, 2022

Risks to submarine cables elsewhere
The events in Tonga once again highlight how fragile the global undersea cable network is and how quickly it can go offline. In 2009, I coauthored a study detailing the vulnerabilities of the submarine telecommunications network to a variety of natural hazard processes.

And nothing has changed since then.

Cables are laid in the shortest (that means cheapest) distance between two points on the Earth’s surface. They also have to be laid along particular geographic locations that allow easy placement, which is why many cables are clustered in choke points.

Some good examples of choke points include the Hawai’ian islands, the Suez Canal, Guam and the Sunda Strait in Indonesia. Inconveniently, these are also locations where major natural hazards tend to occur.

Once damaged it can takes days to weeks (or even longer) to repair broken cables, depending on the cable’s depth and how easily accessible it is. At times of crisis, such outages make it much harder for governments, emergency services and charities to engage in recovery efforts.

Many of these undersea cables pass close to or directly over active volcanoes, regions impacted by tropical cyclones and/or active earthquake zones.

In many ways, Australia is also very vulnerable (as is New Zealand and the rest of the world) since we are connected to the global cable network by a very small number of connection points, from just Sydney and Perth.

In regards to Sydney and the eastern seaboard of Australia, we know large underwater landslides have occurred off the coast of Sydney in the past. Future events could damage the critical portion of the network which links to us.

How do we manage risk going forward?
Given the vulnerability of the network, the first step to mitigating risk is to undertake research to quantify and evaluate the actual risk to submarine cables in particular places on the ocean floors and to different types of natural hazards.

For example, tropical cyclones (hurricanes/typhoons) occur regularly, but other disasters such as earthquakes and volcanic eruptions happen less often.

Currently, there is little publicly available data on the risk to the global submarine cable network. Once we know which cables are vulnerable, and to what sorts of hazards, we can then develop plans to reduce risk.

At the same time, governments and the telecommunication companies should find ways to diversify the way we communicate, such as by using more satellite-based systems and other technologies.

Dr Dale Dominey-Howes is professor of hazards and disaster risk sciences at the University of Sydney. This article is republished from The Conversation under a Creative Commons licence. Read the original article.

Article by AsiaPacificReport.nz