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News

Shoreline most vulnerable during tsunami

Details
Lori Dengler for the Times Standard
Latest
Created: 29 March 2012

 3/29/12

The shoreline is the most vulnerable place to be when a tsunami strikes. In deep water, a tsunami is a series of low, broad bulges hundreds of miles long that won’t be noticed by people in boats.

As the ocean shallows near the coast, the tsunami slows down, allowing the water to build and the height to grow. A major tsunami may be only a few feet high in deep water, but can grow to a tow­ering 30 feet or more at the coast.

The trick to being safe from a tsunami is to be on high ground out of the tsunami zone, or in very deep water where the tsuna­mi height is still small.

Commercial fishermen have the most to lose when a tsunami strikes. Lives and livelihoods are at stake.

Crescent City learned the hard way what can happen when you don’t have a plan to deal with a tsunami. In 2006, three docks were destroyed by a moderate tsunami from the Kuril Islands north of Japan.

As a result, the county, harbor district, and city worked together to develop a notification plan for fisher­men. They got to practice that plan on March 11 of 2011, notifying boat owners that a tsunami was expected and to consider getting their boats out of the harbor.

From 2 a.m. to 6 a.m. a steady stream of boats made it safely to deep water.

The system didn’t work perfectly. Some owners couldn’t be reached because contact information wasn’t up to date. A few others were out of town and at least one boat was having engine repairs. But most of the boats in the commercial fleet made it safely out.

The waters offshore of the North Coast can be haz­ardous with rough seas and bad weather. Exiting Hum­boldt Bay can be dangerous even without a tsunami on the horizon. Make sure you fully understand the hazards of our offshore environment before heading out to sea.

Regardless of experience, last year many boat owners took their boats offshore without adequate supplies or knowl­edge of how long they would need to stay offshore. As a result, boaters tried to re­enter harbors too early, while dangerous tsunami condi­tions still existed. They put themselves and their boats at risk.

Much of our recreational water use is in much smaller craft — fishing, sail, and row boats, kayaks, and surf­boards. If you fall in this group, I suggest you add the Tsunami Warning Center to the weather, tide, and other sites you probably already check before you leave.

If a tsunami advisory or warning is in place, postpone your water plans for another day. If you are already out on the water, your best way to find out about a tsunami warning is by monitoring VHF channel 16 on your marine radio. There’s also a good chance you can hear one of the coastal sirens, or an announcement from the air. Take these warnings seri­ously and get off the water as soon as you can.

You can’t surf a tsunami so don’t try — look at the Japan videos if you don’t believe me. I heard someone describing the surges coming up the Mad River as “totally surfable”. He didn’t notice the large log rolling in the waves at the same time. It is rare for a tsunami to have a face and without a face there is noth­ing for your board to grip.

And if you happen to be sit­ting on your board offshore when you feel an earthquake, get to shore as quickly as you can.

What happens if the tsuna­mi source is nearby? The first tsunami surges from a Casca­dia earthquake could arrive in minutes. If you are onshore or in the harbor when this earthquake hits, you will know it. The shaking will probably last for more than a minute. I know your boats are valuable, but your life is more so. Look at the videos from Japan again. The only prudent behavior is to forget about your boat and immediately head to higher ground. You will also feel the earthquake if you are at sea.

The earthquake may feel like a series of strong bumps as if you are hitting the bottom. It is your warning to get to deeper water, if you are able.

Be prepared to stay offshore for many hours. Monitor your marine VHS radio for information and what har­bors you can safely return to. Don’t let your concerns about a possible tsunami ruin your enjoyment of the ocean and the beach. But always pay attention. If an earthquake occurs, get out of the water and off the beach.

If you hear a siren or other warning, get off the beach.

And don’t forget other coastal hazards — we’re much more likely to be visit­ed by large sneaker waves before the next tsunami arrives.

The State Tsunami Pro­gram has just released a new tsunami brochure for boaters. 

Lori Dengler is professor and chair of the Geology Department at Humboldt State University and an expert on tsunami educa­tion and mitigation. 

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Tell Senator Feinstein to Keep Your Family Safe at the Beach

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HBK
Latest
Created: 21 March 2012

Just like health safety inspections for food, we rely on water quality monitoring and reporting to ensure that the water we swim, surf and play in is safe. The Environmental Protection Agency is proposing to cut all federal funding for beach water quality monitoring in 2013, putting over 90 million Americans at risk of getting sick from polluted water across the United States! Here in California, this funding supports vital state and county health agency testing for polluted water at California beaches. Without this funding, many beaches will go untested, leaving the public at risk from getting sick. The livelihoods of many local businesses that benefit from the more than $12 billion spent by beach visitors each year in California are also at risk. With California beaches closed a total of 5,756 days (number of beach closings plus number of days) in 2010, now is not the time to stop beach monitoring. Please ask Senator Feinstein to restore the money for beach water testing in the federal budget.

Click HERE to sign the petition!

 

 

Feds seek public input on eelgrass policy; Comments due May 8

Details
Donna Tam, Times Standard
Latest
Created: 21 March 2012

3/20/12

The National Oceanic and Atmos­pheric Administration’s Fisheries Ser­vice is requesting public input on for­mulating policy regarding eelgrass, an essential fish habitat across California and in Humboldt Bay.

According to NOAA, eelgrass is one of the state’s most important components for ecosystems in bays, estuaries and near-shore coastal areas.

“It’s a cornerstone species,” Northern California Habitat Manager Steve Edmonds said. “A lot of the basis for estuaries and ecosystems is based on the eelgrass community.”

Eelgrass exists throughout the world and is considered to be one of the most productive habitats available to adult and larval stages of fish, and it also plays a major role in erosion control and recy­cling of nutrients, according to NOAA.

Hum­boldt Bay has one of the largest stands of eelgrass within California. Humboldt Bay contains roughly 45 percent of Cal­ifornia’s eelgrass habitat.

Eelgrass habitat supports commercial and protected fish species. The draft policy will also serve as guidance to NOAA Fisheries Service’s Southwest Region for recommendations concern­ing eelgrass impacts and management through essential fish habitat consulta­tions as required under the Magnuson-Stevens Fishery Conservation and Man­agement Act, and through the Fish and Wildlife Coordination Act and National Environmental Policy Act reviews throughout California.

Electronic copies of the draft plan are available online at www. swr.nmfs.noaa.gov/hcd/index.htm. 

 

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Scientists Look to Explain Whale Calf Sightings in SF Bay

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John Upton, Bay Citizen
Latest
Created: 19 March 2012

Climate change, population growth linked to shifts in feeding and migration patterns

3/17/12

Recent sightings of a gray whale and her infant calf swimming near Alcatraz and Sausalito in San Francisco Bay illuminated a likely repercussion of melting polar ice, scientists said.

Gray whales normally mate in the tropical lagoons of Baja California in the winter, migrate north to chilly polar waters to feed on shrimp-like prey that blanket ocean floors in the spring and summer, and return to Mexico the following winter to give birth in the lagoons, where the young are protected from sharks and orcas that hunt in the open ocean.

But the relatively small size of the calf that followed its wayward mother into the Bay — about that of a newborn, which is 15 feet — indicated that its mother calved as she migrated south along the coastline — just as others of her kind are heading north for the summer feeding grounds.

“We’re seeing more and more calves born before they get all the way down to Mexico,” said Wayne Perryman, leader of the National Oceanic and Atmospheric Administration’s cetacean health and life history program at the agency’s office in La Jolla.

Researchers have been cataloguing changes in the population’s feeding and migration patterns. Some changes are thought to be the result of climate change, while others are linked to the recovery of the species from overhunting.

Perryman said gray whales, including pregnant cows, are leaving polar waters later than was the case 15 to 20 years ago, and he is testing reasons for the shift.

As ice sheets retreat northward, the whales might be taking longer to reach their food before they turn south again. Or perhaps they cannot find enough food in time to keep to traditional schedules.

“Gray whales are feeding farther and farther north,” Perryman said. “Their primary feeding grounds have shifted.”

Delayed migrations and open-ocean calving are not the only changes detected in the population, which has recovered to a population of more than 20,000 since hunting of the whales was outlawed in the 1940s.

Some gray whales have begun feeding off the northern Californian coastline, pursuing different prey than is found in polar waters, according to James Harvey, interim director of the Moss Landing Marine Laboratories.

Meanwhile, the population appears to be relearning direct migration routes that were forgotten when many of the giant mammals were slaughtered by whalers.

The whales have learned to go west around the Channel Islands off Southern California, instead of hugging the coast, and new research led by Harvey shows that they have resumed direct routes between the Point Reyes and San Francisco peninsulas, bypassing the mouth of the Bay.

“The more shortcuts you can take, the shorter the time you’re migrating and the less energy you’re using,” Harvey said.

Harvey said the wayward mother in the bay, meanwhile, was probably hugging the coast to protect her infant from predators when she accidentally followed the shoreline into San Francisco Bay.

“If you’re a female with a calf,” Harvey said, “the best thing to do is swim really close to the coastline.”

 

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Navy holding Eureka meeting on training and testing EIS this Thursday; Comments due April 27

Details
Donna Tam, Times Standard
Latest
Created: 18 March 2012

Sonar testing occurring off Washington coast

3/18/12

 

U.S. Navy representatives are holding a public meeting in Eureka on Thursday to gather public comment a Northwest training and test­ing project that would engage in sonar testing off the coast of Washington.

The original project — the subject of a suit filed by public interest law firm Earthjustice — only focused on training and drew concern from local residents because it included waters off the North Coast. The expanded project now includes the testing of various equipment and vessels.

Liane Nakahara, a public affairs specialist with the Navy, said scientific experts will be present Thursday to discuss concerns and infor­mation with residents. The meeting is scheduled for 5 to 8 p.m. at the Wharfinger Building, 1 Marina Way.

The Navy’s Northwest Training Range Complex has been in use since World War II. It is about 122,000 nautical square miles, stretching from the Olympic Peninsula in Washington to approximately the northern border of Men­docino County.

Nakahara said the sonar testing, which advocates said will harm marine mammals, will occur off the coast of Washington. All training in the southern part of the range occurs out beyond 12 nautical miles.

“You won’t see that out in California,” she said. “If any­thing, the ships will be transit­ing down past your area to San Diego or elsewhere.” The Navy is currently holding public meetings up and down the West Coast to gather input for a draft environmental impact statement and expects to release the draft in fall 2013. The comment period closes on April 27.

The environmental analy­sis looks at both training and testing. The National Marine Fisheries Service issued a permit for the training proj­ect in 2010, but the Navy is re-doing its environmental analysis of the project before the 2015 expiration date in preparation of a renewal, Nakahara said, adding that the Navy decided to include analysis for the testing activi­ties to reduce costs.

According to the Navy, ship-mounted mid-frequen­cy sonar would be used for a maximum of 108 hours a year. The Navy is not permit­ted to kill any marine mam­mals, but 13 incidences of injury to whales are expected each year. According to the Navy, 99 percent of the effects of sonar would dis­turb whales’ behavior. To mitigate the harm caused by sonar, the Navy establishes lookouts who watch for signs of whales.

When Navy lookouts spot whales within 1,000 yards of a ship using sonar, the sonar is required to be powered down, and if whales come within 200 yards, it must be immediately turned off.

The sonar testing is a key component of the Earthjus­tice lawsuit, which was filed against the fisheries service for issuing the Navy’s 2010 permit.

According to Earthjustice, marine mammals have been stranded or stopped feeding after being exposed to mid­frequency sonar.

Earthjustice attorney Steve Mashuda — who is repre­senting the InterTribal Sinkyone Wilderness Coun­cil, Center for Biological Diversity, Friends of the Earth, Friends of the San Juans, Natural Resources Defense Council, and People For Puget Sound — said placing lookouts on ship decks with binoculars is not enough. He said mammals do not always surface, even if they are in the area.

“Our case is aimed at the fisheries service for failing to take some — what we think are very reasonable and com­mon sense — mitigations measures to ensure that their activities don’t harm whales and other marine mam­mals,” Mashuda said.

A National Marine Fish­eries Service spokesman said the agency does not com­ment on ongoing lawsuits.

Mashuda said the service should have added restric­tions to when the Navy can conduct their activities based on known mammal migration schedules or where marine sanctuaries are located.

According to Mashuda, the suit’s next day in court is scheduled for May 15 before U.S. Magistrate Nandor Vadas in Eureka.

Comments on the training and testing project’s environ­mental impact statement can be made online at www. nwtteis.com, or sent to Naval Facilities Engineering Com­mand, Northwest, ATTN: Mrs. Kimberly Kler — NWTT Project Manager, 1101 Tautog Circle, Sil­verdale, WA 98315-1100.

Read Original Article

For more info: Earthjustice and Others Challenge NMFS Regulation of Navy Sonar Activity

 

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