Showing posts with label Waikiki’s Venetian nightmare. Show all posts
Showing posts with label Waikiki’s Venetian nightmare. Show all posts

Friday, October 25, 2013

Sea Level Rise: City's efforts to restore Waikiki Beach fall flat, Beach Erosion Worsens

Sea Level Rise: City's efforts to restore Waikiki Beach fall flat

By    Ron Mizutani   KHON NEWS

City crews armed with heavy equipment pushed tons of sand down from an area fronting the Waikiki police substation to the shoreline where concrete, rocks, and rebar were exposed.

The effort was done at low tide Thursday night and it appeared the temporary fix worked.
The arrival of high tide Friday morning revealed how temporary it really was.

"I thought this was temporary and they might be wasting a lot of money doing this," Waikiki Beach regular Dewey Medeiros said.

State and city inspectors returned to Waikiki Beach Friday morning.

Critics say the city is wasting time and money. There's no word on how much this has cost taxpayers.

"We were against it. We thought they don't want to listen to us. Who better to listen to then to us people who've been here for many decades," Medeiros said.
Last year, 2,000 cubic yards of sand were brought in to replenish the shoreline. The $2.5 million project was finished last April. During that time, workers also tore down two rock walls, or groins, that stretched out into the ocean.

Old-timers say the walls should never have been removed.

"Big swells all that never been affected when the jetty was here. Now they took it out. This is really temporary. As you can see, it's already exposed. We just going wait for couple more high tides and then let's waste some more money," Medeiros said.

So for now, the yellow tape has returned and beachgoers stare in disbelief.

"Since I've been here for the last 35 almost 40 years, never happened this thing. They blaming the high tide of seven, eight inches. I don't believe that," Waikiki Beach regular Nicola Maricic said.

"It's only a matter of time. It's flat out here. Wait until the waves get bigger. Even a big west swell going come right here," Medeiros said.


Wave watchers say a west swell is expected to arrive this weekend and it could be enough to wash away the sand, again.

Waikiki Beach erosion worsens

By    Manolo Morales   KHON NEWS
World famous Waikiki Beach is once again showing serious signs of erosion.

"Sometimes the sand would go out. It would come back, but we never saw this wall this long before," Waikiki beachgoer Corbin Peleiholani said.

Beach boys and regular beachgoers are in disbelief over what's happening to this particular stretch of Waikiki.

"I couldn't believe it [because] there's always been sand here and then you think about people who are not familiar with the area. Tourists that can easily just get knocked into it," beachgoer Bill Jackson said.

"There's some rebar sticking up, pieces of concrete that's just falling into the water. So it can be a hazard," Peleiholani said.

There is caution tape around the exposed area, but some people tend to ignore it.

People at the beach say much of the erosion happened just within the past couple of weeks.

"Every time it gets high tide, the sand will go out every time and then the next thing you know, the wall started to show up. It doesn't look too good," surf instructor Uini Niuelua said.

In April of last year, the state pumped in 24,000 cubic yards of sand from offshore to replenish and widen Waikiki Beach by about 37 feet. The $2.5 million project started from from the Duke Kahanamoku Statue at Kuhio Beach to past the Royal Hawaiian Hotel.

During that time, workers also tore down two rock walls or groins that stretched out into the ocean. Those who know this beach well say taking those walls away might have caused the erosion to get worse.

"There was two walls and it would trap the sand. Sometimes this wall would get maybe exposed up to here, but it always got covered back, but it was never exposed for that length," Peleiholani said.

The state Department of Land and Natural Resources says the walls were taken down because they were deteriorating and posed a safety hazard. People would climb on them and tend to slip and fall.

KHON2 asked the state if taking the walls down made it worse, but did not receive an immediate response.

The state emailed a statement saying it is working with the city to fix the problem.

Honolulu Cave Adventure: Punynari Explores Moiliili (Honolulu, Hawaii) Karst 

Fantastic Must See Oahu Karst Cave Videos And Photos 

Bio Diversity: The Moiliili Karst Formation

Mōʻiliʻili Karst Water Cave


Hiking Hawaii: Moiliili (Honolulu, Hawaii) Karst Cave


Video and Links: Mo'ili'ili Underground Caverns Video 


Karst Cave Hiking Adventure: Moili'ili Karst Exploration 


















Wednesday, October 2, 2013

Rise in Hawaii sea level puts Waikiki, Kakaako at risk, researchers say

Rise in Hawaii sea level puts Waikiki, Kakaako at risk, researchers say

By Marcel Honoré       Oct 01, 2013      Honolulu Star Advertiser


This map rendering shows areas in and around Waikiki that would be flooded should present sea levels eventually rise by up to three feet.

Rising sea levels mostly caused by man-made climate change will likely leave the edges of Waikiki — and possibly more of the densely developed tourist district — underwater by the year 2100, University of Hawaii climate researchers say.

Also, in the next 100 years, Oahu's Windward coast could become much wetter and the Leeward coast much drier, depending on how hard global leaders work to curb greenhouse gas emissions, said Axel Timmermann, a UH oceanography professor.

"It all depends," said Timmermann. "It's our choice."

His comments came during a standing-room-only lecture Monday at UH on the Intergovernmental Panel on Climate Change's Fifth Assessment Report (AR5), which was released this week.

Timmermann and two other UH researchers, Mark Merrifield and Shang-Ping Xie, helped write the report, which covers climate change on a global scale.

The report comes out every six years or so, and the latest version bolsters earlier assessments that the planet is rapidly warming despite recent, shorter lulls in the trend and that greenhouse gases are a key reason.

"Warming of the climate system is unequivocal, and since the 1950s many of the observed changes are unprecedented over decades to millennia," the AR5 summary states.

"The atmosphere and ocean have warmed, the amounts of snow and ice have diminished, sea level has risen, and the concentrations of greenhouse gases have increased."

Temperatures in Hawaii could warm between 0.5 degree Celsius (0.9 Fahrenheit) and 4 degrees Celsius (7.2F) in the next 100 years, causing some of the islands' lower-lying vegetation to instead grow in the mountains, Timmermann said.

The lower figure would come with a dramatic reduction of emissions to preindustrial levels, while the larger assumes current levels.

It's still too early to say how climate change will affect Hawaii overall, but Merrifield said Monday that the islands will be particularly vulnerable to high tides and flooding as sea levels rise.
Warming oceans and melting ice could cause global sea levels to rise between 1.4 and 2.4 feet on average, said Merrifield, who directs the Joint Institute for Marine and Atmospheric Research.

However, the effects of sea rise will likely be greater than average in Hawaii because it's closer to the equator, said Chip Fletcher, an associate dean at UH's School of Ocean and Earth Science and Technology.

To illustrate how vulnerable Hawaii is to rising seas, Merrifield showed the audience a SOEST-produced simulation of how gradually rising tides would flood parts of Waikiki and Kaka­ako. The Ala Wai Canal would also spill into the McCully-Moiliili neighborhood.

Sea rise and ocean acidification caused by greenhouse gas emissions could also erode island beaches, Merrifield said.

"So much of our economy relies on the beaches," he said.



Honolulu Cave Adventure: Punynari Explores Moiliili (Honolulu, Hawaii) Karst 

Fantastic Must See Oahu Karst Cave Videos And Photos 

Bio Diversity: The Moiliili Karst Formation

Mōʻiliʻili Karst Water Cave


Hiking Hawaii: Moiliili (Honolulu, Hawaii) Karst Cave


Video and Links: Mo'ili'ili Underground Caverns Video 


Karst Cave Hiking Adventure: Moili'ili Karst Exploration 



Monday, July 1, 2013

Sea Level Floods, Hotter Climate in Hawaii Isles Coming

 

Sea Level Floods, Hotter Climate in Hawaii Isles Coming

By Jan TenBruggencate
Advertiser Science Writer

Hawai'i in the coming century will face rising temperatures and sea levels, eroding shorelines and more acid in ocean waters as the amount of carbon dioxide in the atmosphere increases.
           
"No one's ready for this," said Charles "Chip" Fletcher, the state's premier coastal geologist.

A map developed by Fletcher to illustrate the impact of a 23-inch rise in sea level — the high end of estimates for the year 2090 — shows parts of Waikiki under water and the Ala Wai Canal "leaking up over its banks at high tide," he said.

The ground floor of the Hawai'i Convention Center, located just steps from the canal, also would be vulnerable.

Springs could start popping up in low regions, and higher elevation areas also would be at risk, as ocean water pushes up into streams.

"When flash flooding occurs, streams won't be able to flow into the ocean. They'll back up and flood," said Fletcher, a University of Hawai'i professor.

Hawai'i residents already are seeing some effects of higher sea levels, such as flooding in Mapunapuna during extraordinary high tides, Fletcher said, adding that "we've seen Ala Moana Beach completely covered with water once or twice a year. In a couple of decades, it'll be happening a couple of times a month."


PREPARING FOR CHANGE

In Hawai'i, preliminary steps are being taken to adapt the Islands to the effects of climate change.

Maui County has established a new coastal building policy that increases shoreline setbacks based on likely erosion in specific areas due to sea level rise, changes in coastal wave and current patterns, and other causes. Kaua'i County is considering a similar policy.

In another initiative, interim UH-Manoa Chancellor Denise Eby Konan earlier this month named a climate change commission comprising climate scientists, lawyers, engineers and others to study the direct effects of climate change here. The panel will be headed by oceanographer Lorenz Magaard, who said sea level rise may be the most critical issue facing this island state.

Others agree.

"Sea level rise is unavoidable, and if that's a couple of feet (over the next century), we're going to have to have adaptation," said Kevin Hamilton, chairman of the UH Meteorology Department and a group leader in the university's International Pacific Research Center, which studies climate variation and predictability in the Asia-Pacific area.

Some hotel industry officials already are considering such adaptations to accommodate predicted sea-level rises in future construction, said Murray Towill, president of the Hawai'i Hotel and Lodging Association.

"I'm aware of discussions at specific (coastal) properties, some of it focused on what to do when the property is rebuilt in the next generation," Towill said.

The climate-change discussion has been energized by the release of initial sections of the Intergovernmental Panel on Climate Change's "Climate Change 2007" report. The IPCC is a joint project of the World Meteorological Organization and the United Nations Environment Programme.

"It's an incredibly serious and objective document," said UH oceanographer Axel Timmermann, who wrote three chapters in the IPCC's 2001 report but did not participate in the current one.

Temperatures in the region are estimated to rise 5 to 9 degrees Fahrenheit, making Hawai'i a significantly less comfortable place, particularly in summer. A hotter climate could impact tourism and dry out the landscape.

"Agriculture may be affected (and) ranching. You get more evaporation when it's warmer," said Jim Weyman, meteorologist in charge with the Honolulu Forecast Office of the National Weather Service. Even the fishing industry can be impacted by warming conditions, since some favored species of fish follow specific temperature zones in the ocean, he said.

A sleeper in the climate-change discussion is acidification of the ocean. A weak solution of carbonic acid is formed when water is exposed to carbon dioxide. So, as carbon dioxide builds up in the atmosphere, the oceans turn more acidic.

At Station Aloha, an oceanographic monitoring station in the deep Pacific north of O'ahu, a 20-year record of seawater acidity shows a clear trend to a more acidic ocean.

"It's just really become clear that acidification has become a serious concern," said Roger Lukas, a UH professor of oceanography.

UH oceanographer Dave Karl, a member of the National Academy of Sciences, said oceanic acidification could become one of the most significant affects of the increasing amount of carbon dioxide in the atmosphere. A more acid ocean interferes with the ability of animals and plants to create calcium carbonate, the stuff that makes up limestone, coral, seashells and, among other things, the protective outer layer of a class of organisms called cocolithophores that are at the base of the marine food chain.

"Everybody gets hurt. People all over the world are now looking at this. It will have a bigger effect than coral bleaching ever will," Karl said.

Eventually, organisms will adapt and evolve, but there are likely to be severe disruptions in oceanic production in the meantime, he said.

ECONOMIC IMPACTS

Hawai'i researchers, policymakers and others say the state needs immediately to begin planning for the impacts of climate change because of its potential impacts on coastal property values, the economy and the environment.

"I think the public is somewhat confused (about global climate change). The state of Hawai'i and people generally in the state need to be aware of how this will challenge us," Lukas said.

Vicky Holt Takamine, president of 'Ilio'ulaokalani, a grass-roots coalition of Hawaiian cultural practitioners, and kumu hula, said her group has been pushing for expanded coastal building setbacks and feels there are many other impacts that aren't being considered.

"We're going to have to be a lot smarter about how we build our homes, our communities," she said. "We need to plan for climate change when we give out permits. We're not planning for future generations."

GASES, ENERGY

Sierra Club Hawai'i Chapter chief Jeff Mikulina said it is important not to lose the connection between the impacts of warming and their partial cause: the increasing amounts of greenhouse gases in the atmosphere.

"We know enough already to know that the map of the Islands is going to look very different, but we haven't seen much policy response," Mikulina said.

Renowned retired UH oceanographer Klaus Wyrtki said he believes governments and industry will do little to stop climate change, and that the most obvious solution is a controversial one.

"There will and should be attempts to reduce energy consumption, but this will not help much as long as world population is rising. The most important measure would be a switch to atomic energy," Wyrtki said.















Friday, June 28, 2013

Waikiki's Venetian Nightmare: Natural Disasters in Paradise?

Waikiki's Venetian Nightmare: Natural Disasters in Paradise?

Close your eyes and picture waves lapping at the first-floor facades of high-rise hotels. The golden sands along Waikiki have long been submerged by the surging Pacific Ocean, as has the nearby Kalakaua Avenue.

A few late-returning tourists in this future Honolulu plod through the low tide and past the partially submerged check-in desk of their hotel, before climbing up several flights of stairs to their electricity-less rooms.

They cannot fly home because, in this storm-tide future, commercial planes remain idle on the runway at the low-lying Honolulu International Airport, their landing gear deep in a dark pond of water and their lighting and navigation systems in need of repairs.

Call it Waikiki’s Venetian nightmare. (Italy has long struggled to slow the legendary city's descent into the waters that surround it, to little avail.)


And there is more of it. Storm water systems along the coastline, unable to handle the influx of seawater, spew sewage around homes.

Reefs that once teemed with brilliant colored coral and bright speckled fish are largely barren, except for thick patches of algae. Ahi and ono, deep-water protein staples, are increasingly scarce.

Beyond the destruction to a way of life, the hit to the economy of Hawaii is enormous.
The Ghost of Christmas Future could tell you that such visions are not what will come to pass, they are the things that could come to pass, if we don’t change. In this case, that means, if humans don’t find a way to curtail global carbon emissions, at least if a recently released federal report proves correct.

The third National Climate Assessment aims to help federal, state and local officials to adapt to mounting environmental challenges that are likely to result from warming waters, higher average temperatures, more extreme weather, and rising sea levels.

“This is a wakeup call,” said Jo-Ann Leong, one of the lead authors of the study and a scientists at the Hawaii Institute of Marine Biology. “If we could get everyone to pay attention and start doing these long-term plans, that is what I would like to see from this report.”



This latest report reflects sophisticated new data that scientists now have on climate change, she explained.

Even if carbon emissions are slashed, the report indicates that the effects of climate change may be very dangerous this century. But on the current trajectory, without major reductions, the situation will be much worse. 

Honolulu Cave Adventure: Punynari Explores Moiliili (Honolulu, Hawaii) Karst 

Fantastic Must See Oahu Karst Cave Videos And Photos 

Bio Diversity: The Moiliili Karst Formation

Mōʻiliʻili Karst Water Cave


Hiking Hawaii: Moiliili (Honolulu, Hawaii) Karst Cave


Video and Links: Mo'ili'ili Underground Caverns Video 


Karst Cave Hiking Adventure: Moili'ili Karst Exploration