ISS018-E-038182 lrg
Recent volcanic activity at Heard Island has occurred at 2,745-meter (9,006-foot) Mawson Peak, which sits within a breached caldera on the southwestern side of the Big Ben Volcano. Calderas form when a magma chamber beneath a volcano empties and collapses. The shadow cast by Mawson Peak points directly to the crescent-shaped caldera rim. Detailed geologic study of Big Ben Volcano is complicated by the presence of several glaciers, including Gotley and Lied Glaciers on the southwestern slopes. This image, taken during Southern Hemisphere summer, also reveals non-glaciated volcanic rock (light to dark brown) on either side of Gotley Glacier.
Identification | |
---|---|
Mission | ISS018 (Expedition 18) |
Roll | E |
Frame | 038182 |
Country or Geographic Name | ANTARCTICA |
Features | S.W. AREA OF HEARD I., MAWSON PEAK, FREMANTLE PEAK |
Center Point Latitude | -53.1° N |
Center Point Longitude | 73.5° E |
Camera | |
Camera Tilt | 36° |
Camera Focal Length | 800 mm |
Camera | Nikon D2Xs |
Film | 4288 x 2848 pixel CMOS sensor, RGBG imager color filter. |
Quality | |
Percentage of Cloud Cover | 0-10% |
Nadir What is Nadir? | |
Date | 2009-02-28 |
Time | 12:54:41 |
Nadir Point Latitude | -51.3° N |
Nadir Point Longitude | 71.9° E |
Nadir to Photo Center Direction | Southeast |
Sun Azimuth | 271° |
Spacecraft Altitude | 197 nautical miles (365 km) |
Sun Elevation Angle | 11° |
Orbit Number | 2885 |
Relevantní obrázky
Relevantní články
Mawson PeakMawson Peak (2745 m n. m.) je hora v pohoří Big Ben na Heardově ostrově v Jižním oceánu. Jedná se o nejvyšší horu Heardova ostrova a McDonaldových ostrovů a zároveň všech australských teritorií. Nicméně ještě vyšší horou je Mount McClintock v pohoří Britannia na Australském antarktickém území. .. pokračovat ve čtení