Zipped data files contain 1) grid data file (GMT or ASCII), 2)high-res JPG of image, and 3) explanatory metadata text file (identicalto linked file listed below).* Ikonos imagery & USGS Digital Ortho Quarter Quads NOTincluded with download.
Pagan Island download
Zipped data files contain 1) grid data file (NetCDF/GMT, GeoTIFF, or ASCII), 2) high-res JPG of image, and 3) explanatory metadata text file (identical to linked file listed below). Study area grids are named for the island location, the type of sensor used for data acquisition, the chart box number, and the grid resolution in meters.
The boxes on the map represent charts used to grid subsets of the backscatter data into manageable file sizes. The box labels correspond to the 5 meter NetCDF grids and GeoTIFFs that are available for download in the pull down menus. To create a map of the entire backscatter dataset, all charts must be downloaded and the data must be mosaicked. EM300 5 m grid: Grid metadata textSelect a GeoTIFF25-43 GeoTIFF Grid25-44 GeoTIFF Grid25-45 GeoTIFF Grid25-46 GeoTIFF Grid25-47 GeoTIFF Grid25-48 GeoTIFF Grid Top of the page h1 margin:0px 0px 10px 0px;padding:10px 0px 6px 0px;font-family: Arial, Helvetica, sans-serif;font-size:22px;line-height:30px;font-weight:normal;color:#039;border-top:0px solid #06c;border-left:0px dotted #06c;text-align:left;h2 margin:20px 0px 10px 0px;padding:0px;font-family: Arial, Helvetica, sans-serif;font-size:17px;line-height:28px;font-weight:bold;color:#039;text-align:left;h3 margin:20px 0px 5px 0px;padding:0px;font-family: Arial, Helvetica, sans-serif;font-size:14px;line-height:20px;font-weight:bold;color:#039;text-align:left;h3 a font-weight:bold;h3.v-space padding:0 0 9px 0;h4 margin:18px 0px 10px 0px;padding:0px;font-family: Arial, Helvetica, sans-serif;font-size:13px;line-height:18px;font-weight:bold;color:#039;text-align:left;h4.no-link font-weight:normal;h5 margin:18px 0px 12px 0px;padding:0px;font-family: Arial, Helvetica, sans-serif;font-size:13px;line-height:18px;font-weight:normal;color:#039;text-align:left;h6 margin:10px 0px 0px 0px;padding:0px;font-family: Arial, Helvetica, sans-serif;font-size:10px;line-height:16px;font-weight:bold;color:#039;text-align:left;/* START Basic Text */a color:#039;text-decoration:none;font-weight:bold;font-family:arial, helvetica, sans-serif;a:link color:#039;a:visited color:#039;a:hover color:#06c; text-decoration:underline;a:active color:#0cc;.no_margin-top margin-top:0px;.no_margin-top-deadlink color:#666; margin-top:0px;.no_margin margin:0px;p font:11px/18px Arial, Helvetica, sans-serif;margin:0px 0px 18px 0px;padding:0px;text-align:left;#MainContent>p margin:0px;#MainContent>p+p margin:16px 0px 0px 0px;#pubs p font:11px/17px trebuchet, arial, helvetica, sans-serif;margin:0px 0px 16px 0px;padding:0 0 0 60px;text-indent:-30px;text-align:left;.caption font-size:10px; line-height:13px; font-weight:bold; margin:6px 0px 0px 0px;.click-on font-weight:normal; font-style:italic; font-size:10px; line-height:12px; margin:0px;.disclaimer font-size:9px; font-style:italic; text-align:right; padding:14px 0px 0px 0px;.notavail font-weight:bold;font-size:14px;font-style:italic;color:#666.tight margin:0px;p.v-space padding:0 0 12px 0;/* START Lists */ul list-style:none;margin:9px 0px 20px 30px;padding:0px;ul li font:11px/15px arial, helvetica, sans-serif;font-style:normal;margin:10px 0px 0px 0px;padding:0px 0px 0px 0px;.disc list-style:disc;li.tight margin:2px 0px 0px 0px;ol margin:9px 0px 20px 30px;padding:0px;ol li font:11px/15px arial, helvetica, sans-serif;font-style:normal;margin:10px 0px 0px 0px;padding:0px 0px 0px 0px;ul ol margin:0px 0px 10px 20px;padding:0px;ul ul list-style:circle;margin:3px 0px 10px 18px;padding:0px;ul ul li line-height:15px;margin:0px;/* START Menu */#Menu position:absolute;top:97px;left:10px;width:120px;padding:0px 0px 20px 0px;margin:0px 0px 0px 0px;background-color:#fff;#Menu a:link color:#039;#Menu a:visited color:#039;#Menu a:hover color:#06c; text-decoration:underline;#Menu a:active color:#0cc;.deadlink font-weight:bold; color:#666;.deadlink_separator font-weight:bold; color:#666; border-top:1px solid #ccc; margin-top:10px; padding-top:15px;.livelink_separator font-weight:bold; color:#039; border-top:1px solid #ccc; margin-top:10px; padding-top:15px;#Menu ul margin:5px 0px 0px 0px;padding:0 0 10px 0;#Menu ul li text-align:left;font-size:11px;font-weight:bold;line-height:16px;list-style:none;margin:0px 0px 10px 0px;padding:3px 0px 2px 6px;border-top:1px solid #09f;border-left:1px solid #06c;#Menu li a font-weight:bold;.youarehere font-style:italic;#Menu ul ul margin:5px 0px 0px 12px;padding:0 0 10px 0;#Menu ul ul li text-align:left;font-size:11px;font-weight:normal;line-height:16px;list-style:none;margin:0px 0px 5px 0px;padding:4px 0px 1px 4px;border-top:1px dotted #09f;border-left:0px dotted #06c;#Menu ul ul ul ul margin:5px 0px 0px 24px;padding:0 0 5px 0;#Menu ul ul ul ul li text-align:left;font-size:11px;font-weight:normal;line-height:16px;list-style:circle;margin:0px 0px 5px 0px;padding:0px 0px 0px 0px;border-top:0px dotted #09f;border-left:0px dotted #06c;/* END Menu */table.sortable background-color : #fff; height: 220; width: 220;border:2px solid #CDE6FA; align: left;table.sortable td height: 220; width: 220; background-color : #fff;border:2px solid #CDE6FA;table.sortable tr td background-color: white; height: 220; width: 220; align: center;border:1px solid #06c;Benthic Habitat Data BathymetryZipped data files contain 1) grid data file (GMT or ASCII), 2)high-res JPG of image, and 3) explanatory metadata text file (identicalto linked file listed below).* Ikonos imagery & USGS Digital Ortho Quarter Quads NOTincluded with download.
Pagan Island is the subaerial portion of two adjoining Quaternary stratovolcanoes near the middle of the active Mariana Arc, [FAT1]north of Saipan. Pagan and the other volcanic islands that constitute part of the Arc form the northern half of the East Mariana Ridge[FAT2], which extends about 2-4 km above the ocean floor. The > 6-km-deep Mariana Trench adjoins the East Mariana Ridge on the east, and the Mariana Trough, partly filled with young lava flows and volcaniclastic sediment, lies on the west of the Northern Mariana Islands (East Mariana Ridge. The submarine West Mariana Ridge, Tertiary in age, bounds the western side of the Mariana Trough. The Mariana Trench and Northern Mariana Islands (East Mariana Ridge) overlie an active subduction zone where the Pacific Plate, moving northwest at about 10.3 cm/year, is passing beneath the Philippine Plate, moving west-northwest at 6.8 cm/year. Beneath the Northern Mariana Islands, earthquake hypocenters at depths of 50-250 km identify the location of the west-dipping subduction zone, which farther west becomes nearly vertical and extends to 700 km depth. During the past century, more than 40 earthquakes of magnitude 6.5-8.1 have shaken the Mariana Trench.
The Mariana Islands form two sub-parallel, concentric, concave-west arcs. The southern islands comprise the outer arc and extend north from Guam to Farallon de Medinilla. They consist of Eocene to Miocene volcanic rocks and uplifted Tertiary and Quaternary limestone. The nine northern islands extend from Anatahan to Farallon de Pajaros and form part of the inner arc. The active inner arc extends south from Anatahan, where volcanoes, some of which are active, form seamounts west of the older outer arc. Other volcanic seamounts of the active arc surmount the East Mariana Ridge in the vicinity of Anatahan and Sarigan and north and south of Farallon de Pajaros. Six volcanoes (Farallon de Pajaros, Asuncion, Agrigan, Mount Pagan, Guguan, and Anatahan) in the northern islands have erupted during the past century, and Ruby Seamount erupted in 1996.
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The foreshortened appearance of the island is due to the viewing angle and distance from the space station. The ISS was located over the Pacific Ocean approximately 480 kilometers to the southeast of Pagan Island when the image was taken. Visit this page for another image of Pagan Island.
Minor steam and gas plumes were observed in satellite images during the past week. Pagan Island, the largest and one of the most active of the Mariana Islands volcanoes, consists of two stratovolcanoes connected by a narrow isthmus. Almost all of the historical eruptions of Pagan, which date back to the 17th century, have originated from North Pagan volcano. The largest eruption of Pagan during historical time took place in 1981 and prompted the evacuation of the sparsely populated island. Historical information from the Smithsonian Global Volcanism Program. The Moderate Resolution Imaging Spectroradiometer (MODIS) instrument that flies aboard NASA's Terra satellite captured this image of fires and smoke on May 8, 2012 at 0045 UTC (08:45 p.m. EDT). The fires are marked by red dots and smoke from the fires appears a light brown in color. NASA image courtesy Jeff Schmaltz, MODIS Rapid Response Team. Caption: NASA/Goddard, Lynn Jenner 2ff7e9595c
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