| 词条 | Jingpo Lacus |
| 释义 |
|name = Jingpo Lacus |image = |caption = Jingpo Lacus in a false-color synthetic aperture radar image of Titan's north polar region. An extension of Kraken Mare enters the view at upper left. |type = Lacus |coordinates = {{coord|73|N|336|W|globe:titan_type:landmark|display=inline,title}} |diameter = 240 km[1] |eponym = Jingpo Lake }} Jingpo Lacus is a lake in the north polar region of Titan,[2] the planet Saturn's largest moon. It and similarly sized Ontario Lacus[3] are the largest known bodies of liquid on Titan after the three maria (Kraken Mare, Ligeia Mare and Punga Mare).[4] It is composed of liquid hydrocarbons (mainly methane and ethane). It is west of Kraken Mare at 73° N, 336° W, roughly 240 km (150 mi) long,[2][1] similar to the length of Lake Onega on Earth. Its namesake is Jingpo Lake,[2] a scenic lake in China. Specular reflectionOn 8 July 2009, Cassinis Visual and Infrared Mapping Spectrometer (VIMS) observed a specular reflection in 5 µm infrared light off Jingpo Lacus at 71° N, 337° W. (This has sometimes been described less accurately as at the southern shoreline of Kraken Mare.[5]) Specular reflections indicate a smooth mirror-like surface, so the observation corroborated the inference of the presence of a large liquid body drawn from radar imaging. The observation was made soon after the north polar region emerged from 15 years of winter darkness.[6] {{clear}}GalleryNotes1. ^1 The USGS web site gives the size as a "diameter", but it is actually the length in the longest dimension. 2. ^1 2 {{cite web | title = Jingpo Lacus | work = Gazetteer of Planetary Nomenclature | publisher = USGS Astrogeology Science Center | date = | url = http://planetarynames.wr.usgs.gov/Feature/14655 | format = | doi = | accessdate = 2012-03-17}} 3. ^{{cite web | title = Titan lacūs | work = Gazetteer of Planetary Nomenclature | publisher = USGS Astrogeology Science Center | date = | url = http://planetarynames.wr.usgs.gov/SearchResults?target=TITAN&featureType=Lacus,%20lac%C5%ABs | format = | doi = | accessdate = 2012-03-17}} 4. ^{{cite web | title = Titan maria | work = Gazetteer of Planetary Nomenclature | publisher = USGS Astrogeology Science Center | date = | url = http://planetarynames.wr.usgs.gov/SearchResults?target=TITAN&featureType=Mare%2C%20maria | format = | doi = | accessdate = 2012-03-16}} 5. ^{{Cite web | last = Cook | first = J.-R. C. | authorlink = | title = Glint of Sunlight Confirms Liquid in Northern Lake District of Titan | work = NASA web site Cassini mission page | publisher = NASA | date = 2009-12-17 | url = http://www.nasa.gov/mission_pages/cassini/whycassini/cassini20091217.html | accessdate = 2009-12-18}} 6. ^{{cite web | last = Lakdawalla | first = E. | title = Cassini VIMS sees the long-awaited glint off a Titan lake | work = The Planetary Society Blog | publisher = Planetary Society | date = 17 December 2009 | url = http://planetary.org/blog/article/00002267/ | accessdate = 2009-12-17}} ReferencesExternal links
1 : Lakes of Titan (moon) |
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