Text/HTML
Login
Menu
Collections
About
Submit
FAQs
Search Open/Close
Open/Close Header Details
Search
Enter Title
Current Measuring Devices
Menu Open/Close
Voyage
History of Oceanography
The Early Instruments Collections
Current Measuring Devices
Early Instruments
Figure 39. Current indicator invented by James Norman Carruthers in 1924.This meter works on the principle used in the Robinson anenometer. Left:picture of the unit. Right: unit open to view interior mechanism. This current meter was meant primar
Download
.jpg
(1.5 MB)
Figure 40. Current recording device invented by Pierre Idrac in 1927. Thisdevice was first used in the Gulf of Gascogne and in the la Manche on the vessel POURQUOI-PAS in 1927.
Download
.jpg
(1.54 MB)
Figure 41. Current meter and recording device invented by Kohei Ono in 1950.Above: Picture of the unit. Below: the recording mechanism. This instrumentwas built by the Ogawa Seiki Company, Ltd., of Tokyo.
Download
.jpg
(1.39 MB)
Figure 42. A BBT-Neyrpic current recorder made between 1950 and 1952 as theresult of a collaboration between the companies of Barbier, Benard & Turenne and Nepyric. The official test of this instrument was in the Gulf of Sfax about1951 in four mete
Download
.jpg
(655.81 KB)
Figure 43. A Plessey current meter and recorder. Built by Plessey Electronicscirca 1969. This instrument was conceived by the Christian Michelson Instituteof Bergen, Norway, under the auspices of the undersea oceanographic committee of the North A
Download
.jpg
(1.2 MB)
Figure 44. A buoy with a drogue used by the CHALLENGER Expedition in the GulfStream for current studies in 1873. The drogue acts like an underwater sail and is pushed by the current. The buoy allows visual tracking of the motion of thedrogue. It w
Download
.jpg
(852.6 KB)
Figure 45. A rheostat controlled bathymeter invented by Emil Stahlberger in1873. This instrument was designed to measure currents, depth, and take bottomsamples. It was used for the first time in the Gulf of Fiume aboard theAustrian corvette MINER
Download
.jpg
(421.35 KB)
Figure 46. Float built by Henry Mitchell of the U. S. Coast Survey in 1874 foruse by C&GS; Ship BLAKE in Gulf Stream studies.
Download
.jpg
(495.88 KB)
Figure 47. Float devised by Prince Albert I of Monaco and Professor GeorgesPouchet in 1885 and used on board l'HIRONDELLE in the same year tostudy currents of the North Atlantic Ocean.
Download
.jpg
(796.98 KB)
Figure 48. Test float devised by Prince Albert I of Monaco and Georges Pouchet in 1887 to study currents. This float was never used in practice. This floatwas made by the instrument-maker E. Deriveau.
Download
.jpg
(989.52 KB)
Figure 49. Float invented by Prince Albert I of Monaco and Georges Pouchet for study of currents in the North Atlantic off l'HIRONDELLE in 1887. Left: the unit as it would be seen in the water.Right: the internal structure of the float. A thousan
Download
.jpg
(1.09 MB)
Figure 50. Example of message included in floats invented by Prince Albert I ofMonaco. Left: glass tube encasing the message. Right: Message as written inten languages. The message requested information regarding the circumstances of of discovery
Download
.jpg
(992.33 KB)
Figure 51. Coupled bottle floats devised by Alfred Hautreux in 1893 for thestudy of currents in the Gulf of Gascogne. These bottles were deployed fromvarious naval vessels in 1893 and 1894.
Download
.jpg
(1.35 MB)
Figure 52. Floats used by the Oceanographic Society of the Gulf of Gascogne in1901 and deployed by the ship BRESIL. This work was done under instructions byPrince Albert I of Monaco.
Download
.jpg
(1.16 MB)
Figure 52 (continued). Instructions to finders of the floats used by the Oceanographic Society of the Gulf of Gascogne. These instructions were used by thepacket boat CHILE in 1905.
Download
.jpg
(1.16 MB)
Figure 52 (end). Instructions to finders of the floats used by the Oceanographic Society of the Gulf of Gascogne. These instructions were used by thesteamer l'ANDRE'E in 1906.
Download
.jpg
(1009.78 KB)
Figure 53. A bottom float for studying currents in closed basins of smallextent used by the Copenhagen Hydrographic Laboratory.Left:float. Right: message. This float was first conceived by George P. Bidder with the aid of the Marine Biological Ass
Download
.jpg
(1.17 MB)
Figure 54. A float used by the Oceanographic Society of San Sebastien anddeployed from the vessel MAMELENA in 1911 in the vicinity of San Sebastien.Left: float device. Right: included message as written in Spanish,French, and English.
Download
.jpg
(1.07 MB)
Figure 55. A coupled sinking float for use on the high seadevised by Julien Thoulet in 1896. This is the original model that was nevertested at sea.
Download
.jpg
(1.09 MB)
1
2
Back To Top