Isochrone map

Isochrone map of the Austro-Hungarian Empire, in 1912. The railway lines are clearly visible.
Isochrone map showing drive times around airports in northern Finland, created using GIS software (2011)

An isochrone map in geography and urban planning is a map that depicts the area accessible from a point within a certain time threshold.[1] An isochrone (iso = equal, chrone = time) is defined as "a line drawn on a map connecting points at which something occurs or arrives at the same time".[2] In hydrology and transportation planning isochrone maps are commonly used to depict areas of equal travel time. The term is also used in cardiology[3][4][5] as a tool to visually detect abnormalities using body surface distribution.[6]

  1. ^ Allen, Jeff (2018-12-01). "Using Network Segments in the Visualization of Urban Isochrones". Cartographica: The International Journal for Geographic Information and Geovisualization. 53 (4): 262–270. doi:10.3138/cart.53.4.2018-0013. ISSN 0317-7173. S2CID 133986477.
  2. ^ Desai, Kiran (17 October 2008). "Isochrones: Analysis of Local Geographic Markets" (PDF). Mayer Brown. Retrieved 2018-05-31.
  3. ^ "MFS ECG Potential Map (40ms)". Springer Science+Business Media. Retrieved March 21, 2012.
  4. ^ Rosenbaum, David S.; Jalife, José (2001). Optical mapping of cardiac excitation and arrhythmias. Wiley-Blackwell. p. 251. ISBN 0879934816.
  5. ^ Ramanathan, Charulatha; Jia, Ping; Ghanem, Raja; Ryu, Kyungmoo; Rudy, Yoram (April 2006). "Activation and repolarization of the normal human heart under complete physiological conditions". PNAS. 103 (16): 6309–6314. Bibcode:2006PNAS..103.6309R. doi:10.1073/pnas.0601533103. PMC 1458874. PMID 16606830.
  6. ^ Miyashita, T; Okano, Y (January 1995). "Isochrone map, its implication and clinical usefulness". Nihon Rinsho: Japanese Journal of Clinical Medicine. 53 (1): 48–55. PMID 7897854.