DATASTREME OCEAN WEEK TWO: 31 January- 4 February 2005

• Coastal communities partnership formed -- A memorandum of agreement was signed last Thursday between the National Oceanic and Atmospheric Administration (NOAA) and the US Environmental Protection Agency (EPA) that partners these two agencies and permit them to help coastal communities develop in ways that would benefit the economy, public health and the environment. [NOAA News]
• Website aids tsunami relief work in Sri Lanka -- Cornell University recently unveiled a Geographical Information System (GIS) website that provides relief workers and researchers access to information focusing on the tsunami damaged regions of Sri Lanka. [Cornell University]
• Resort damaged by hurricane may reopen--The planning commission on the Hawaiian island of Kauai has approved restoration of a famous resort that was heavily damaged by Hurricane Iniki in September 1992. [USA Today]
• Impacts of oil spill fade slowly -- Scientists from the US Geological Society recently reported that the crude oil that washed up along the shoreline of Alaska's Prince William Sound from the 1989 Exxon Valdez oil spill continues to adversely impact a variety of marine life. [ENN]
• Toxins found in Baltic fish--An environmental group is pressuring the European Union to adapt restrictions on a variety of industrial chemicals following a recent study that reported fish caught in the Baltic Sea had toxins that exceeded limits deemed safe for human consumption. [ENN]
• Great Lake levels lowered by river erosion --A recent study charges that the water levels on Lakes Michigan and Huron have dropped by as much as 13 inches because of undetected river erosion on the St. Clair River following a dredging project that increased the size of the navigation channel in 1962. [ENN]
• Global and US Hazards/Climate Extremes-- A review and analysis of the global impacts of various weather-related events, including drought, floods, and storms during the current month. [NCDC]
• Earthweek -- Diary of the Planet [earthweek.com] Requires Adobe Acrobat Reader.

• REPORTS FROM THE FIELD --

A request: If you have some ocean-related experience that you would like to share with other DataStreme Ocean participants, please send them to the email address appearing at the bottom of this document for possible inclusion in a News file. Thank you. EJH

Concept of the Week: The Birth of Surtsey, A Volcanic Island

In early November 1963, cod fishers plying the waters of the North Atlantic south of Iceland observed what appeared to be smoke or steam emanating from the distant ocean surface. They were witnessing the beginnings of a volcanic eruption that ultimately gave birth to a new island later named Surtsey after Surtur, the fire giant of Norse mythology. Surtsey is located at 63.4 degrees N, 20.3 degrees W or 33 km (20 mi) south of the coast of Iceland. Volcanic activity was nothing new to the fishers who lived on the nearby volcanic Westman Islands (Vestmannaeyjar). These islands as well as the main island of Iceland straddle the Mid-Atlantic Ridge, a divergent plate boundary where hot molten lava wells up from the Earth's mantle, cools and solidifies into new oceanic crust.

The eruptions that produced Surtsey began on the ocean floor, some 130 m (427 ft) below sea level. The accumulating lava, cinders, and ash first emerged from the sea on 15 November 1963. Over the next 3.5 years, episodic eruptions built an island that eventually covered 2.5 square km (1 square mi) and attained a maximum elevation of 171 m (560 ft) above sea level. The initial eruptions were explosive as hot magma interacted with cold seawater producing dark jets of ash and steam that shot up to 200 m (656 ft) above two main volcanic vents. At this time, clouds of ash and steam rose into the atmosphere to altitudes perhaps as great as 10 km (6.2 mi). Subsequent eruptions were much more peaceful, consisting of quiescent flows of lava. When the eruptions ceased in early June 1967, a cubic kilometer of ash and lava had built up on the ocean floor but only 9% of this volcanic material was above sea level.

No volcanic activity has occurred on Surtsey since 1967 and geologists consider the volcanic island to be extinct with little risk of future eruptions. Nonetheless, Surtsey remains off limits to visitors except for scientists who obtain permission from the Icelandic government. The island offers scientists a unique opportunity to study not only the geology but also the establishment of plants and animals on the island, a process known as ecological succession. For example, by 1987, some 25 species of higher plants were growing on the initially barren island and 20 species of birds were nesting there.

Unless volcanic activity begins anew, the future is not bright for Surtsey. Some geologists predict that the island will be reduced to scattered stacks of rock in 100 years or so. The island is composed of basaltic rock that is particularly vulnerable to weathering and erosion, ocean waves are eroding its shores, and the island is gradually sinking into the sea. Scientists reported a total subsidence of about 1.1 m (3.6 ft) between 1967 and 1991. Compaction of the volcanic material and the underlying sea-floor sediments are likely causes of the subsidence. For a NASA topographical image of Surtsey, go to http://denali.gsfc.nasa.gov/islands/surtsey/. This image was obtained using a scanning airborne laser altimeter.

1. The volcanism responsible for the formation of Surtsey was associated with a [(divergent)(convergent)] plate boundary.
2. At present on Surtsey, erosive forces [(are)(are not)] prevailing over volcanic activity.

• 1 February 1788...A patent for a steamboat was issued by the state of Georgia to Isaac Briggs and William Longstreet. The patent was the only one ever to be issued by Georgia, and first in the U.S. for a steamboat. Much development had to follow before the steamboat would be commercially viable. (Today in Science)
• 1 February 1838...A U.S. patent (No. 588) was issued for the screw propeller to John Ericsson, (1803-89), a Swedish American engineer, who later designed and built the Monitor for the Union Navy in the War of the Rebellion. (Today in Science)
• 1 February 1811...The Bell Rock Lighthouse was lit for the first time eleven miles off the east coast of Scotland. Using 24 lanterns, it began flashing its warning light atop a 100-foot white stone tower. As the oldest sea-washed lighthouse in existence, it was built by Robert Stevenson on a treacherous sandstone reef, which, except at low tides, lies submerged just beneath the waves. In the centuries before, the dangerous Bell Rock had claimed thousands of lives, as vessels were wrecked on its razor-sharp serrated rocks. (Today in Science)
• 1 February 1953...An intense low-pressure system 966 millibars (29.52 inches of mercury) swept across the North Sea. Wind speeds at Aberdeen, Scotland exceeded 125 mph. A storm surge of 13 feet, aided by a high spring tide, breached the dams in as many as 100 places along the Zuider Zee in The Netherlands, flooding 3.95 million acres or one-sixth of the country. More than 1800 deaths were attributed to drowning and 50,000 people were evacuated. In addition, this storm was responsible for the loss of 100,000 poultry, 25,00 pigs and 35,000 cattle. (The Weather Doctor) (Accord's Weather Guide Calendar)
• 2-3 February 1952...The only tropical storm of record to hit the U.S. in February moved out of the Gulf of Mexico and across southern Florida on the 3^rd ; it also represents the earliest reported formation of a tropical storm on record in the Atlantic basin. The storm produced 60-mph winds, and two to four inches of rain. (2^nd-3^rd) (The Weather Channel)
• 2 February 1976...Groundhog Day Storm, one of the fiercest Maritimes storms ever battered Bay of Fundy region around Saint John, New Brunswick with winds clocked at 118 mph, generating 39 foot waves with swells of 32.5 feet. (The Weather Doctor)
• 3 February 1488...The Portuguese navigator Bartholomeu Diaz landed at Mossal Bay, Cape of Good Hope, the first European known to have landed on the southern extremity of Africa. He was also the first known European to have traveled this far south and round the Cape. (Wikipedia)
• 3 February 1880...Date of a terrific gale on the New Jersey coast. Six vessels came ashore with 47 persons on board all but two survived. Nineteen USLSS crewmen won Gold Life-Saving Medals during the wreck of the George Taulane. (USCG Historian's Office)
• 3 February 1943...The torpedoing of the transport Dorchester saw USCGC Comanche and Escanaba respond. The crew of the Escanaba used a new rescue technique when pulling survivors from the water. This "retriever" technique used swimmers clad in wet suits to swim to victims in the water and secure a line to them so they could be hauled onto the ship. Although Escanaba saved 133 men (one died later) and Comanche saved 97, over 600 men were lost, including the Four Chaplains. (USCG Historian's Office)
• 3 February 1953...The French oceanographer Jacques-Yves Cousteau published his most famous and lasting work, The Silent World, which was made into a film three years later. (The History Channel)
• 5 February 1924...Hourly time signals from the Royal Greenwich Observatory were broadcast for the first time. (Wikipedia)
• 5 February 1997...High winds pushed mountains of ice against the northern shore of Lake Erie crushing several houses and cottages in Colchester, Ontario. (The Weather Doctor)
• 5 February 2004 - Nineteen Chinese cockle-pickers from a group of 35 drowned after being trapped by rising tides in Morecambe Bay, England. (Wikipedia)
• 6 February 1933...The highest reliably observed ocean wave was seen by crew of the US Navy oiler, USS Ramapo, in the North Pacific during the night on its way from Manila to San Diego. The wave was estimated (by triangulation) to have a height of 112 feet. Average winds at the time were 78 mph. (Accord's Weather Guide Calendar) (See additional discussion on highest ocean waves)

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URL: DataStreme Ocean/news.html
Prepared by DS Ocean Central Staff and Edward J. Hopkins, Ph.D.,
email hopkins@meteor.wisc.edu
© Copyright, 2005, The American Meteorological Society.