Degree Confluence Project
A GPS unit at confluence 53N 0, in Lincolnshire, England

The Degree Confluence Project is a World Wide Web-based all-volunteer project which aims to have people visit each of the integer degree intersections of latitude and longitude on Earth, posting photographs and a narrative of each visit online. Intersections are defined on the horizontal datum WGS 84. The project describes itself as "an organized sampling of the world".

Contents

Description

Visitors to degree confluences almost always make use of GPS receivers, but visits can be achieved using only a map on the appropriate datum, or a map on another datum but with the appropriate correction applied. For a successful visit, the visitor must get within 100 metres of the confluence point, and post a narrative and several photographs to the project website. A visit, or attempted visit, which does not conform to these rules may still be recorded on the website as an incomplete visit. The project encourages visits to degree confluences which have been visited previously, and many confluence points in North America and Europe have been visited several times.

The total number of degree confluences is 64,442,[1] of which 21,543 are on land, 38,409 on water, and 4,490 on the Antarctic and Arctic ice caps.[2] The project categorizes degree confluences as either primary or secondary. A confluence is primary only if it is on land or within sight of land. In addition, at higher latitudes only some points are designated primary, because confluences crowd together near the poles.[3] Both primary and secondary confluences may be visited and recorded.

As of October 30, 2009, the project reported that the world has 16,324 indexed primary degree confluence points and 5,749 of them, in 181 countries, have been visited at least once. This means that 35.19% of the world's primary confluences have been completed. In addition, 540 unique visits have been made to secondary degree confluences. There have been a total of 10,900 degree confluence visits made by 11,368 visitors.[4] 84,105 degree confluence photographs have been posted.[5] The project is currently hosted by ibiblio.

History

The project was started by Alex Jarrett in February 1996 because he "liked the idea of visiting a location represented by a round number such as 43°00'00"N 72°00'00"W. What would be there? Would other people have recognized this as a unique spot?"[6] .

Milestones

The only integer degree intersection of latitude and longitude in Luxembourg: N 50° E 6°, June 2009

Notes

  1. ^ Latitude lines 89°N to 89°S (179), multiplied by 360° of longitude (360), plus the two poles (2) = 179 × 360 + 2 = 64,442.
  2. ^ Classifications as of August 4, 2007
  3. ^ Poles Problem
  4. ^ Mautz, R. (2008): Sampling the World, Coordinates – Positioning, Navigation and Beyond, no. 3, pp. 22–27, 2008.
  5. ^ statistics page
  6. ^ project history
  7. ^ some degree confluence visits that pre-date this visit have since been posted on the project's website

See also

External links


Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Degree Confluence Project — Le Degree Confluence Project est un projet international qui consiste à visiter à l aide d un récepteur GPS le point d intersection de tous les méridiens de longitude entière et de tous les parallèles de latitude entière. Le nom anglais du projet …   Wikipédia en Français

  • Degree Confluence Project — Der einzige Konfluenzpunkt Luxemburgs: N 50° O 6°, Juni 2009 Ein Konfluenzpunkt ist der Schnittpunkt eines ganzzahligen Längengrades und ganzzahligen Breitengrades, wie zum Beispiel der Punkt mit den Koordinaten …   Deutsch Wikipedia

  • Degree Confluence Project — …   Википедия

  • Confluence project — Degree Confluence Project Le Degree Confluence Project est un projet international qui consiste à visiter à l aide d un récepteur GPS le point d intersection de tous les méridiens de longitude entière et de tous les parallèles de latitude entière …   Wikipédia en Français

  • Confluence Project — See Degree Confluence Project for the quest to find the intersections of whole number latitude and longitude. The Confluence Project is a series of outdoor installations and interpretive artworks located in public parks along the Columbia River… …   Wikipedia

  • Confluence (disambiguation) — Confluence, in geography, describes the meeting of two or more bodies of water. Confluence may also refer to: Confluence (abstract rewriting), a property of term rewriting systems Confluence (meteorology), the streamline air flow convergence of a …   Wikipedia

  • Confluence — bedeutet den Kanu Hersteller Confluence Watersports Degree Confluence Project Konfluenz Konfluenz (Informatik), die Eigenschaft eines Transitionssystems, jedem Element nur höchstens eine Normalform zuzuordnen Konfluenz (Zellkultur) das… …   Deutsch Wikipedia

  • Confluence — For other uses, see Confluence (disambiguation). Confluence of rivers, the Mosel flows into the Rhine at Koblenz. The Name Koblenz itself has its origin in the latin name Confluentes …   Wikipedia

  • DCP — Degree Confluence Project (Academic & Science » Universities) * Department of City Planning (Governmental » State & Local) * Deferred Compensation Plan (Business » General) * Data Collection Platform (Computing » Hardware) * Defined Contribution… …   Abbreviations dictionary

  • 45X90 — 45×90 Les points 45×90 sont les quatre points de la surface de la Terre situés à mi chemin entre les pôles et l équateur (en termes de latitude), et à mi chemin entre le méridien de Greenwich et le 180e méridien (en termes de longitude). En d… …   Wikipédia en Français

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”