| 词条 | Mount Dana |
| 释义 |
| name = Mount Dana | photo = Mount Dana 2008 edit.JPG | photo_caption = Mount Dana as seen from the west. The hike to the top goes up this face. | photo_size = 200 | elevation_ft = 13061 | elevation_ref = {{NAVD88}}[1] | prominence_ft = 2417 | prominence_ref = [2] | parent_peak = Mount Lyell[3] | location = Mono / Tuolumne counties, California, U.S. | range = Sierra Nevada | coordinates = {{coord|37.899901553|N|119.2210926|W|type:mountain_region:US_scale:100000_source:NGS|format=dms|display=inline,title}} | range_coordinates = | coordinates_ref = [1] | topo = USGS Mount Dana | type = Metamorphic rock | age = Cretaceous | first_ascent = June 28, 1863 by Whitney, Brewer, and Hoffmann[4] | easiest_route = Hike, {{YDS|1}}[5] | listing = California highest major peaks 18th }}Mount Dana is a mountain in the U.S. state of California. Its summit marks the eastern boundary of Yosemite National Park and the western boundary of the Ansel Adams Wilderness. At an elevation of {{convert|13061|ft|m|0}}, it is the second highest mountain in Yosemite (after Mount Lyell), and the northernmost summit in the Sierra Nevada which is over 13000 feet in elevation. Mount Dana is the highest peak in Yosemite that is a simple hike to the summit. The mountain is named in honor of James Dwight Dana, who was a professor of natural history and geology at Yale.[6] Mount Dana is composed of prebatholithic rock that is mostly reddish metamorphic rock, which was composed by metavolcanics of surfacing magma from the Mesozoic Era.[7][8] Mount Dana's northern face includes a small, receding glacier known as the Dana Glacier. The Dana Meadows lie at the foot of the mountain. From the top, lakes throughout Dana Meadows, Mono Lake, Tioga Peak and many other mountains are in view. HikeFrom the Tioga Pass Road there are many easy routes. ({{YDS|1}}), available that lead to the summit along the mountain's western or southern slopes. These routes rise {{convert|3108|ft|m|0}} in elevation in {{convert|2.9|mi|km|1}}, (a 20.3% average grade). The trail is not frequently maintained. There is a clearly marked path leading just above tree line. After topping a ridge, a set of use-paths and ducked routes are present, with the main path running along the easterly ridgeline. Additionally, numerous alternate trail segments begin and end at various points on the southwestern face, making parts of this hike a difficult class 2. The path segments turn into scree toward the summit, where a shallow stone-walled shelter and register are found. Significant snow fields on the mountain slopes can exist late into the summer season. Total round trip hiking time can be anywhere between 3 and 12 hours depending many factors, such as acclimatization to elevation. After reaching a plateau above the tree line, almost all vegetation disappears with the exception of lichen and a few high alpine Sky Pilot (Polemonium eximium). Fauna are largely limited to spiders and insects, such as black/brown grasshoppers. The only mammals other than humans are marmots and American Pikas which are lagomorphs related to rabbits. Thunderstorms are known to arise suddenly, making the rocks slippery, and the hiking dangerous year round. Even experienced hikers can face altitude sickness, due to the high elevation.[9] {{Panorama |image=File:Mount Dana Panorama.jpg |height=175 |caption=The view from the summit encompasses much of Yosemite National Park and Mono Lake}}References1. ^1 {{cite ngs |id=HR2738 |name=Mount Dana}} 2. ^{{cite peakbagger |pid=2620 |name=Mount Dana, California |accessdate=2009-08-05}} 3. ^{{cite loj |id=17282 |name=Mount Dana |accessdate=2012-04-01}} 4. ^{{cite journal|first=Francis P.|last=Farquhar|title=Exploration of the Sierra Nevada|journal=California Historical Society Quarterly|volume=4|number=1|pages=3-58|date=March 1925|url=http://www.yosemite.ca.us/library/exploration_of_the_sierra_nevada/whitney.html}} 5. ^{{cite Secor |edition=3 |pages=397f}} 6. ^{{cite book |last=Browning |first=Peter |title=Place Names of the Sierra Nevada |publisher=Wilderness Press |year=1986 |location=Berkeley |page=51 |isbn=0899971199 }} 7. ^{{cite web | date=September 20, 2002 |url=http://vulcan.wr.usgs.gov/LivingWith/VolcanicPast/Places/volcanic_past_yosemite.html |title=America's Volcanic Past - Yosemite National Park |publisher=USGS/Cascades Volcano Observatory |accessdate=July 11, 2006}} 8. ^{{cite web |url=http://www.sonoma.edu/users/c/cannon/bio314chapter4_part2.html |title=Biology 314 — Sierra Nevada |pages=69–94 |publisher=Sonoma State University |accessdate = 2006-07-08}} 9. ^{{cite journal |author1=Cymerman, A |author2=Rock, PB |title=Medical Problems in High Mountain Environments. A Handbook for Medical Officers |publisher=US Army Research Inst. of Environmental Medicine Thermal and Mountain Medicine Division Technical Report |volume=USARIEM-TN94-2 |url=http://archive.rubicon-foundation.org/7976 |accessdate=2009-03-05}} External links{{commons|Mount Dana}}
5 : Mountains of Yosemite National Park|Mountains of the Ansel Adams Wilderness|Mountains of Mono County, California|Mountains of Tuolumne County, California|Mountains of Northern California |
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