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Topic: Seth Carlo Chandler

	Chandler's Wobble (Site not responding. Last check: 2007-11-03)
		The wobble, named for its 1891 discoverer, Seth Carlo Chandler, Jr., an American businessman turned astronomer, is a wobbling motion exhibited by Earth as it rotates on its axis.
		Richard Gross, a Jet Propulsion Laboratory geophysicist, reports that the principal cause of the Chandler wobble is fluctuating pressure on the bottom of the ocean, caused by temperature and salinity changes and wind-driven changes in the circulation of the oceans.
		Gross calculated that two-thirds of the Chandler wobble is caused by ocean-bottom pressure changes and the remaining one-third by fluctuations in atmospheric pressure.
	www.geocities.com /lkp550/space/chanwob.htm (187 words)

	Seth Carlo Chandler, Jr., September 16, 1846—December 31, 1913 \| By W. E. Carter and M. S. Carter \| Biographical ...
		SETH CARLO CHANDLER, JR., is best remembered for his re-search on the variation of latitude (i.e., the complex wobble of the Earth on its axis of rotation, now referred to as polar motion).
		Chandler spent many of the most enjoyable hours of his life at the eyepiece of his telescope, which was mounted in a cupola atop the roof of this house.
		Chandler was quite aware of this and rather than mounting a new observational program of his own, or waiting for new observations to become available from other sources, he spent much of his energy re-reducing existing data, deriving some remarkable results.
	www.nap.edu /readingroom/books/biomems/schandler.html (6111 words)

	Chandler wobble
		The Chandler wobble has a slightly variable period of 416 to 433 days and causes the location of the poles to wander by as much as 15 meters from their mean positions.
		From computer simulations he was able to show that about two-thirds of the Chandler wobble is due to fluctuating pressure on the bottom of the ocean, caused by temperature and salinity changes and wind-driven changes in the circulation of the oceans.
		Scientists are interested in the Chandler wobble because variations in latitude due to the wobble could throw off celestial navigation systems that are unaware of the wobble by a fifth of a mile.
	www.daviddarling.info /encyclopedia/C/Chandler_wobble.html (381 words)

	Howstuffworks "What is the Chandler wobble?"
		The Chandler wobble is the change in the spin of the earth on its axis.
		The displacement of the Chandler wobble is measurable -- Imagine a gigantic ballpoint pen poked through the center of the earth, entering at the South Pole and exiting at the North Pole.
		The American astronomer Seth Carlo Chandler discovered the wobble in the late 1800s.
	www.howstuffworks.com /question442.htm (460 words)

	Solving A Wobbly Question Of Oceanic Proportions
		The Chandler wobble, named for its 1891 discoverer, Seth Carlo Chandler, Jr., an American businessman turned astronomer, is one of several wobbling motions exhibited by the Earth as it rotates on its axis, much as a top wobbles as it spins.
		It has been calculated that the Chandler wobble would be damped down, or reduced to zero, in just 68 years, unless some force were constantly acting to reinvigorate it.
		Writing in the August 1 issue of Geophysical Research Letters, Richard S. Gross of NASA's Jet Propulsion Laboratory reports that the principal cause of the Chandler wobble is fluctuating pressure on the bottom of the ocean, caused by temperature and salinity changes and wind-driven changes in the circulation of the oceans.
	www.spacedaily.com /news/earth-00e.html (454 words)

	AAVSO: X Cygni, September 2002 Variable Star Of The Month
		Chandler, a resident of Cambridge, Massachusetts, USA, had been independently monitoring the changing beacons of light in the earliest days of variable star astronomy.
		Chandler was a great friend to the cause of variable star observing and encouraged others to do the same by publishing a series of articles on how to observe variable stars.
		Although Chandler had a close association with variable star astronomy, he is best known for his research on the variation of latitude -- the wobble of the Earth as it rotates on its axis, known as polar motion (Carter & Carter online).
	www.aavso.org /vstar/vsots/0902.shtml (2140 words)

	Seth Carlo Chandler - Wikipedia, the free encyclopedia
		Chandler is best remembered for his research on what is today known as the Chandler wobble.
		He independently co-discovered the nova T Coronae Borealis, improved the estimate of the constant of aberration, and computed the orbital parameters of asteroids and comets.
		Chandler was awarded the Gold Medal of the Royal Astronomical Society in 1896 and the James Craig Watson Medal in 1894.
	en.wikipedia.org /wiki/Seth_Carlo_Chandler (244 words)

	News in Science - Mystery of wobbly Earth solved - 19/07/2000
		The Chandler wobble, named after its 1891 discoverer, Seth Carlo Chandler Jr, is one of several wobbles the Earth makes as it rotates on its axis.
		He found the wobble is due to fluctuating pressure on the bottom of the ocean, caused by temperature and salinity changes, and wind-driven changes in the circulation of the oceans.
		Dr Gross calculated that two thirds of the Chandler wobble is caused by changes in pressure at the ocean bottom, and the rest by fluctuations in atmospheric pressure.
	www.abc.net.au /science/news/stories/s153343.htm (361 words)

	Amazon.co.uk: Latitude: Books: Bill Carter,Merri Sue Carter (via CobWeb/3.1 planetlab1.isi.jhu.edu) (Site not responding. Last check: 2007-11-03)
		In 1891 Seth Carlo Chandler Jr., an actuary for a Boston insurance company with no formal education in astronomy, shocked the international scientific community by announcing that he had solved the problem and that an inexpensive instrument he had designed could detect the variation of latitude.
		Chandler's discovery, dubbed "the Chandler Wobble," had profound significance to astronomers of the time and later played an important role in space exploration and the development of the revolutionary Global Positioning System (GPS).
		Tells the story of American actuary Seth Chandler's 1891 discovery which explained the variations in astronomical observations which were baffling astronomers in 19th century Europe.
	www.amazon.co.uk.cob-web.org:8888 /Latitude-Bill-Carter/dp/1557500169 (441 words)

	Chandler Seth Carlo 1846 1913 Papers of Seth Chandler, 1883-1910. AIP International Catalog of Sources (Site not responding. Last check: 2007-11-03)
		Chandler Seth Carlo 1846 1913 Papers of Seth Chandler, 1883-1910.
		Bequest to the Dudley Observatory from Seth C. Chandler.
		For additional materials on Chandler, researchers should also review the records of the Dudley Observatory and the records of the 'Astronomical Journal'.
	www.aip.org /history/catalog/icos/2648.html (290 words)

	Chandler One-Name Study
		Although its origins are probably the same as Chandler, the surname Candler is phonetically sufficiently distinct to be considered deliberately different, and therefore to be treated as a separate surname rather than a variant of Chandler.
		Later, the term 'chandler' was used for corn chandlers, and for ships' chandlers who sold most of the fittings and supplies for boats, as well as the candles.
		Well-known Chandlers include the authors Raymond Chandler and Christine Chaundler; mathematician/astronomer Seth Carlo Chandler who discovered the earth's rotational oscillation known as 'the Chandler wobble'; actor Jeff Chandler (real name Ira Grossel); Alexander John Chandler, the veterinarian after whom Chandler, Arizona was named; and Chandler Bing, a character in the 'Friends' TV series.
	www.one-name.org /profiles/chandler.html (1083 words)

	The Anomalous North Sea Pole Tide Revisited
		Such a free mode of oscillation was expected to exist and, although its period is adequately explained, neither the source of the changes in the angular momentum that excite it have been identified nor the sink of its energy (Lambeck, 1988).
		The study of tide gauge data has shown that in some areas around the world there is a statistically significant signal at frequencies similar to those expected for the pole tide, and with amplitude of a few centimetres, several times larger than expected from the equilibrium theory (see, for example, Haubrich and Munk, 1959).
		Remarkably at the Chandler wobble frequency, the model removes most of the energy from the tide gauge data and leaves the residuals (dashed line) with power comparable to that of the equilibrium pole tide calculated from the formulation of J.Wahr and with data supplied by S.Manabe and M.Feissel.
	www.pol.ac.uk /psmsl/gb/gb1/pole.html (974 words)

	Earth Changes TV - Earth throws a wobbly (Site not responding. Last check: 2007-11-03)
		A mysterious wobble that shakes the Earth as it spins on its axis is caused by pressure changes at the bottom of the ocean, say scientists at Nasa's Jet Propulsion Laboratory.
		The Chandler Wobble, as it is known, was first detected in 1891 by an American astronomer called Seth Carlo Chandler.
		Similar to a wobble in a spinning top, it is one of a number of tremors exhibited by the Earth as it rotates.
	www.earthchangestv.com /breaking/July2000/0719wobbly.htm (311 words)

	Book Review - More Mathematical Astronomy Morsels by Jean Meeus
		The effect was slight, amounting to a fraction of a second of arc in latitude.
		Chandler spent more than twelve years on his quest, battling against his academic superior, Simon Newcomb.
		Chandler was proved correct, on the basis of altitude measurements taken with an instrument of his own design, the almucantar.
	www.mikeoates.org /mas/reviews/latitude.htm (423 words)

	A mystery of Earth's wobble solved: It's the ocean (Site not responding. Last check: 2007-11-03)
		Writing in the August 1 issue of Geophysical Research Letters, Richard Gross, a JPL geophysicist, reports that the principal cause of the Chandler wobble is fluctuating pressure on the bottom of the ocean, caused by temperature and salinity changes and wind-driven changes in the circulation of the oceans.
		Through its various bureaus, he writes, the service enables the kind of interdisciplinary research that led to his solution of the Chandler wobble mystery.
		Gross's research was supported by NASA's Office of Earth Science, Washington, D.C. JPL is a division of the California Institute of Technology in Pasadena.
	www.jpl.nasa.gov /releases/2000/chandlerwobble.html (362 words)

	Earth-Jupiter Nexus. (Page 2) (Site not responding. Last check: 2007-11-03)
		The Chandler Wobble named for Seth Carlo Chandler, the scientist who discovered it in 1891 is one of several motions exhibited by Earth as it rotates about its axis, much like a top wobbles as it spins.
		While many of the wobbles are explained, the cause of the Chandler Wobble has perplexed scientists for years.
		The Chandler Wobble (CW) is also known by these other terms: the Chandler Period, Chandler Motion, Variation of Latitude and Polar Motion.
	ourworld.compuserve.com /homepages/jbstoneking/EJNpage2.htm (316 words)

	Seth Palmer: News, Views & Muse™: News, Views and Muse Archives (Site not responding. Last check: 2007-11-03)
		Sir Ken Robinson is an influential advocate for the importance of creativity in education.
		Logistically, I'm not sure how it could have been implemented, but when you see a person jump from 70+ stories above you, you just think that if there was a way they could have a glimmer of hope for surviving the incident, they probably wouldn't have jumped.
		There was some fool on the BBC last night from an American handgun advocacy group and he sounded like a southern hick with a thick drawl and a very matter-of-fact tone.
	www.sethpalmer.com /news_views_and_muse (4933 words)

	Chandler Seth Carlo 1846 1913 Last will and testament, 1913, and resolution of the International Astronomical Union ... (Site not responding. Last check: 2007-11-03)
		Chandler Seth Carlo 1846 1913 Last will and testament, 1913, and resolution of the International Astronomical Union recognizing Chandler's achievements, 1913-1981.
		Original of will in possession of Chandler's granddaughter, Ruth Chandler McCreary, in 1981.
		The will concerns Chandler's arrangements for an orderly transfer of funds, and instructions concerning the Astronomical Journal.
	www.aip.org /history/catalog/icos/4228.html (145 words)

	Worldly wobbles
		This wobble, now known as the Chandler wobble in honour of its discoverer, didn't disappear over time, as would have been expected if no further force reactivated it.
		In 1884 and 1885, Chandler made careful observations of the night sky, using an instrument he invented himself for the purpose, which he named the almucantar.
		More than a century passed before Chandler proved Euler's prediction correct, and it has taken a further century for scientists to be fairly certain that they have pinpointed the cause of Chandler's Wobble.
	plus.maths.org /issue12/news/chandler/index.html (744 words)

	Silliman's Blog
		If poetry is all about making it then the sociology of poetry matters -- one wants this and wants that and the others won't give this or that and so the endless wars and leapings from here and there and sallyings forth and so on.
		I think if Seth were a statistician rather than an attorney he would easily be able to back up his claim that Ron’s essays are often used as a foil for some with a minimum of interest in the complexities of the issues he raises.
		It is interesting that Ron refers to Sunset Debris because, as I was reading Seth Abramson's elaborate permutations through questions, my mind went to The Alphabet Poem, thinking that may have been the quality that attracted Ron to the piece.
	ronsilliman.blogspot.com /2005/12/seth-abramson-has-questions.html (9007 words)

	No Way!: Chandler Wobble
		If you were able to stand directly on the North Pole and had a VERY keen sense of motion, you might be able to detect a strange fact about planet earth.
		More than one hundred years ago, a little known American astronomer by the name of Seth Chandler, Jr.
		Since 1891, when Chandler first discovered “The Wobble,” scientists have made many, many guesses as to its cause.
	express.howstuffworks.com /nw-wobble.htm (342 words)

	NASA PLANS TO STEAL THE THUNDER FROM RUMOR MILL NEWS! (Site not responding. Last check: 2007-11-03)
		Chandler was a businessman who became an astronomer.
		Some said it was caused by changes in the amounts of snow on the ground, or by the movement of water in rivers or lakes.
		Gross says two-thirds of the wobble is caused by ocean bottom pressure changes and the remaining one-third by the changes in atmospheric pressure.
	www.rumormillnews.com /cgi-bin/archive.cgi?read=51611 (816 words)

	iBrattleboro.com - The Earth's Wobble Is Caused By Temperature and Salinity Changes (Site not responding. Last check: 2007-11-03)
		The Chandler wobble is a small variation in Earth's axis of rotation, discovered by American astronomer Seth Carlo Chandler in 1891.
		On 18 July 2000, however, the Jet Propulsion Laboratory announced that "the principal cause of the Chandler wobble is fluctuating pressure on the bottom of the ocean, caused by temperature and salinity changes and wind-driven changes in the circulation of the oceans."
		The Chandler wobble is a factor considered by satellite navigation systems (especially military systems).
	www.ibrattleboro.com /article.php?story=200412311637439 (683 words)

	Seth Palmer: News, Views & Muse™: September 2005 Archives (Site not responding. Last check: 2007-11-03)
		Seth Palmer: News, Views and Muse™: September 2005 Archives
		Also, the archive template - the page display for individual items - is not yet implemented but it will be soon.
		Let her go out to pasture somewhere in Texas' big, wide, open spaces and quietly slip away into history...
	www.sethpalmer.com /2005/09 (1038 words)

	Alachua Astronomy Club: Monthly Meetings 2002
		Seth Carlo Chandler, Jr., had not even attended University.
		Chandler and Newcomb proved that American scientists could compete with their European colleagues, heralding the emergence of American science from European dominance.
		This was perhaps the first time that American astronomers out did their European colleagues and is a very significant historical happening than most Americans, even amateur astronomers are not aware of.
	www.floridastars.org /meets02.html (2983 words)

	Chronology of Science in the United States
		Seth Carlo Chandler (1846-1913) published early reports on his astronomical work on the discovery of variation of latitude.
		The investigations on which he reported had begun at least as early as 1884-1885.
		Chandler's work appeared as "On the Variation of Latitude" in Astronomical Journal 11 (1891), 12 (1892), 13 (1893).
	home.earthlink.net /~claelliott/chron1890.htm (3078 words)

	What makes the world wobble \| csmonitor.com
		In 1891, American amateur astronomer Seth Carlo Chandler Jr.
		The Chandler and annual wobbles cancel each other out every 6.4 years.
		He showed that the main cause of the 14-month Chandler wobble probably is change in sea-bottom pressures.
	www.csmonitor.com /2006/0629/p16s01-cogn.html (583 words)

	Chandler Arizona - Information (Site not responding. Last check: 2007-11-03)
		Reservoir, Horseshoe Reservoir Reservoir, Bartlett Reservoir Hills, Fountain Hills Verde, Camp Verde Clarkdale, Clarkdale and Cottonwood, Arizona Cottonwood are of rivers External chandler arizona.
		in Each district of Arizona Category:U.S. State Carlo Chandler Seth C. Chandler Chandler is a worn P.
		Chandler s collection scholars Henry William births Henry William deaths Henry William Chandler: Red Tide.
	www.freewebs.com /information24/chandler-arizona.html (291 words)

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