File:ISS018-E-038182 lrg.jpg
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Summary
Heard Island is located in the southern Indian Ocean, approximately 1,550 kilometers (963 miles) north of Antarctica. The island is a visible part of the Kerguelen Plateau, a submerged feature on the seafloor. The plateau was formed when large amounts of volcanic rock erupted over a geologically short time period. (When large amounts of volcanic rock erupt beneath the ocean from processes other than seafloor spreading, geologists refer to them as large igneous provinces.) Most of Heard Island is formed from volcanic rocks associated with the Big Ben stratovolcano. The northeastern slopes of the volcano are visible in shadow at the lower right of this detailed astronaut photograph.
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 (<a href="https://en.wikipedia.org/wiki/Expedition_18" class="extiw" title="en:Expedition 18">Expedition 18</a>) |
| 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 <a href="https://en.wikipedia.org/wiki/Nadir" class="extiw" title="en:Nadir">What is Nadir?</a> | |
| 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 |
Licensing
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File history
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 04:53, 4 January 2017 | | 1,440 × 960 (689 KB) | 127.0.0.1 (talk) | Heard Island is located in the southern Indian Ocean, approximately 1,550 kilometers (963 miles) north of Antarctica. The island is a visible part of the Kerguelen Plateau, a submerged feature on the seafloor. The plateau was formed when large amounts of volcanic rock erupted over a geologically short time period. (When large amounts of volcanic rock erupt beneath the ocean from processes other than seafloor spreading, geologists refer to them as large igneous provinces.) Most of Heard Island is formed from volcanic rocks associated with the Big Ben stratovolcano. The northeastern slopes of the volcano are visible in shadow at the lower right of this detailed astronaut photograph. <p>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. </p> <p><br></p> <table class="infobox" style="float: left; width: 75%; text-align: left; font-size: 85%;line-height: 1.3em;"> <caption style="margin-left:0px; font-size: 135%;"> <span style="float:left;margin:5px; margin-top: 8px;"><img alt="International Space Station Insignia" src="https://upload.wikimedia.org/wikipedia/commons/thumb/5/56/S94-47164_ISS_Cupola_Artists_Rendering.png/34px-S94-47164_ISS_Cupola_Artists_Rendering.png" title="International Space Station Insignia" width="34" height="34" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/5/56/S94-47164_ISS_Cupola_Artists_Rendering.png/51px-S94-47164_ISS_Cupola_Artists_Rendering.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/5/56/S94-47164_ISS_Cupola_Artists_Rendering.png/68px-S94-47164_ISS_Cupola_Artists_Rendering.png 2x" data-file-width="3000" data-file-height="3000"></span><span style="line-height: 3.5em;">ISS Crew Earth Observations: <a rel="nofollow" class="external text" href="http://eol.jsc.nasa.gov/scripts/sseop/photo.pl?mission=ISS018&roll=E&frame=038182"><b>ISS018-E-038182</b></a></span><span style="float:right;margin:7px;"><img alt="International Space Station Insignia" src="https://upload.wikimedia.org/wikipedia/commons/thumb/b/bb/ISS_insignia.svg/30px-ISS_insignia.svg.png" title="International Space Station Insignia" width="30" height="37" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/b/bb/ISS_insignia.svg/45px-ISS_insignia.svg.png 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/b/bb/ISS_insignia.svg/60px-ISS_insignia.svg.png 2x" data-file-width="800" data-file-height="990"></span> </caption> <tr><th colspan="2" style="line-height: 1.6em; font-size: 105%; text-align: left; background: #DDDDDD;"> Identification </th></tr> <tr> <th width="33%"> Mission </th> <td> ISS018 (<a href="https://en.wikipedia.org/wiki/Expedition_18" class="extiw" title="en:Expedition 18">Expedition 18</a>) </td> </tr> <tr> <th> <abbr class="abbr" title="A single letter E refers to images that were originally captured in digital form including electronic still camera (ESC) and High Definition Television (HDTV) images.">Roll</abbr> </th> <td> E </td> </tr> <tr> <th> Frame </th> <td> 038182 </td> </tr> <tr> <th> Country or Geographic Name </th> <td> ANTARCTICA </td> </tr> <tr> <th> Features </th> <td> S.W. AREA OF HEARD I., MAWSON PEAK, FREMANTLE PEAK </td> </tr> <tr> <th> <abbr class="abbr" title="Negative numbers indicate photos south of the equator.">Center Point Latitude</abbr> </th> <td> -53.1° N </td> </tr> <tr> <th> <abbr class="abbr" title="Negative numbers indicate photos west of the prime meridian.">Center Point Longitude</abbr> </th> <td> 73.5° E </td> </tr> <tr><th colspan="2" style="line-height: 1.6em; font-size: 105%; text-align: left; background: #DDDDDD;"> Camera </th></tr> <tr> <th> <abbr class="abbr" title="Calculated look angle away from a straight nadir (straight down below the spacecraft) view.">Camera Tilt</abbr> </th> <td> 36° </td> </tr> <tr> <th> Camera Focal Length </th> <td> 800 mm </td> </tr> <tr> <th> Camera </th> <td> Nikon D2Xs </td> </tr> <tr> <th> Film </th> <td> 4288 x 2848 pixel CMOS sensor, RGBG imager color filter. </td> </tr> <tr><th colspan="2" style="line-height: 1.6em; font-size: 105%; text-align: left; background: #DDDDDD;"> Quality </th></tr> <tr> <th> <abbr class="abbr" title="Ranges are 0-10%, 11-25%, 26-50%, 51-75% and 76-100% cloud cover.">Percentage of Cloud Cover</abbr> </th> <td> 0-10% </td> </tr> <tr><th colspan="2" style="line-height: 1.6em; font-size: 105%; text-align: left; background: #DDDDDD;"> Nadir <span style="float:right;"><small><a href="https://en.wikipedia.org/wiki/Nadir" class="extiw" title="en:Nadir">What is Nadir?</a></small></span> </th></tr> <tr> <th> Date </th> <td> <span class="mw-formatted-date" title="2009-02-28">2009-02-28</span> </td> </tr> <tr> <th> <abbr class="abbr" title="Greenwich Mean Time">Time</abbr> </th> <td> 12:54:41 </td> </tr> <tr> <th> Nadir Point Latitude </th> <td> -51.3° N </td> </tr> <tr> <th> Nadir Point Longitude </th> <td> 71.9° E </td> </tr> <tr> <th> Nadir to Photo Center Direction </th> <td> Southeast </td> </tr> <tr> <th> <abbr class="abbr" title="Clockwise angle in degrees from north to the sun measured at the nadir point.">Sun Azimuth</abbr> </th> <td> 271° </td> </tr> <tr> <th> Spacecraft Altitude </th> <td> 197 nautical miles (365 km) </td> </tr> <tr> <th> <abbr class="abbr" title="Angle in degrees between the horizon and the sun, measured at the nadir point.">Sun Elevation Angle</abbr> </th> <td> 11° </td> </tr> <tr> <th> Orbit Number </th> <td> 2885 </td> </tr> </table> <div style="clear:both;"></div> |
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