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Internal Waves, Strait of Gi …
nasa, nasaimageofthedaygalle …
This photograph was taken by …
STS098-712-29
mediatype IMAGE
mediatype image
date 2001-02-19
creator NASA -- Image number STS098-712-29. Images provided by the eol.jsc.nasa.gov/ Earth Sciences and Image Analysis Laboratory, Johnson Space Center. Additional images taken by astronauts can be viewed at NASA-JSC's eol.jsc.nasa.gov/sseop/ Gateway to Astronaut Photography of Earth
identifier STS098-712-29
The Strait of Gibraltar in 3 …
nasa, nasaimageofthedaygalle …
Pasadena, CA, for NASA's Ear …
Gibraltar_SRTM
mediatype IMAGE
mediatype image
date 2000-02-11
creator NASA -- Image courtesy SRTM Team, NASA JPL
identifier Gibraltar_SRTM
Where Europe meets Africa: I …
nasa, nasaimageofthedaygalle …
This natural-color satellite …
PIA04376
mediatype IMAGE
mediatype image
date 2002
creator NASA -- Image courtesy NASA/GSFC/LaRC/JPL, www-misr.jpl.nasa.gov/ MISR Team. Jim Knighton ( jknighton@clear-light.com jknighton@clear-light.com ) of Clear Light Image Products produced the image mosaic. Please note that the image shown here is at a pixel resolution of approximately 1.1 kilometers, but a more detailed version at a resolution of 278 meters is available from the producer. Text by Clare Averill (Raytheon ITSS / Jet Propulsion Laboratory).
identifier PIA04376
ASTER Gibraltar
PIA02657
Sol (our sun)
ASTER
Title ASTER Gibraltar
Original Caption Released with Image The Strait of Gibraltar separates Spain from Morocco. This image, acquired on July 5, 2000, covers an area 34 kilometers (21 miles) wide and 59 kilometers (37 miles) long in three bands of the reflected visible and infrared wavelength region. The promontory on the eastern side of the conspicuous Spanish port is the Rock of Gibraltar. Once one of the two classical Pillars of Hercules, the Rock was crowned with silver columns by Phoenician mariners to mark the limits of safe navigation for the ancient Mediterranean peoples. The rocky promontory still commands the western entrance to the Mediterranean Sea. The rocky limestone and shale ridge rises abruptly from the sea, to a maximum elevation of 426 meters (1,398 feet). A British colony, Gibraltar occupies a narrow strip of land at the southernmost tip of the Iberian Peninsula. It is separated from the Spanish mainland by a neutral zone contained on a narrow, sandy isthmus. Because of its strategic location and formidable topography, Gibraltar serves mainly as a British fortress. Most of its sparse land is taken up by air and naval installations, and the civilian population is small. Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) is one of five Earth-observing instruments launched December 18, 1999, on NASA's Terra satellite. The instrument was built by Japan's Ministry of International Trade and Industry. A joint U.S./Japan science team is responsible for validation and calibration of the instrument and the data products. Dr. Anne Kahle at NASA's Jet Propulsion Laboratory, Pasadena, California, is the U.S. science team leader, Moshe Pniel of JPL is the project manager. ASTER is the only high-resolution imaging sensor on Terra. The primary goal of the ASTER mission is to obtain high-resolution image data in 14 channels over the entire land surface, as well as black and white stereo images. With revisit time of between 4 and 16 days, ASTER will provide the capability for repeat coverage of changing areas on Earth's surface. Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) is one of five Earth-observing instruments launched December 18, 1999, on NASA's Terra satellite. The instrument was built by Japan's Ministry of International Trade and Industry. A joint U.S./Japan science team is responsible for validation and calibration of the instrument and the data products. Dr. Anne Kahle at NASA's Jet Propulsion Laboratory, Pasadena, California, is the U.S. science team leader, Moshe Pniel of JPL is the project manager. ASTER is the only high-resolution imaging sensor on Terra. The primary goal of the ASTER mission is to obtain high-resolution image data in 14 channels over the entire land surface, as well as black and white stereo images. With revisit time of between 4 and 16 days, ASTER will provide the capability for repeat coverage of changing areas on Earth's surface. The broad spectral coverage and high spectral resolution of ASTER will provide scientists, in numerous disciplines with critical information for surface mapping and monitoring dynamic conditions and temporal change. Examples of applications include monitoring glacial advances and retreats, potentially active volcanoes, thermal pollution, and coral reef degradation, identifying crop stress, determining cloud morphology and physical properties, evaluating wetlands, mapping surface temperature of soils and geology, and measuring surface heat balance.
Strait of Gibraltar, Perspec …
PIA03397
Sol (our sun)
C-Band Interferometric Radar …
Title Strait of Gibraltar, Perspective with Landsat Image Overlay
Original Caption Released with Image Pasadena, CA, for NASA's Earth Science Enterprise, Washington, DC. View Size: 46 kilometers (28 miles) wide, 106 kilometers (66 miles) distance Location: 36 degrees North latitude, 5.5 degrees West longitude Orientation: Looking East, 15 degrees down from horizontal, 3X vertical exaggeration Image Data: Landsat Bands 1, 2+4, 3 as blue, green, red respectively Original Data Resolution: 30 meters (99 feet) Date Acquired: February 2000 (SRTM), July 6, 1987 (Landsat), This perspective view shows the Strait of Gibraltar, which is the entrance to the Mediterranean Sea from the Atlantic Ocean. Europe (Spain) is on the left. Africa (Morocco) is on the right. The Rock of Gibraltar, administered by Great Britain, is the peninsula in the back left. The Strait of Gibraltar is the only natural gap in the topographic barriers that separate the Mediterranean Sea from the world's oceans. The Sea is about 3700 kilometers (2300 miles) long and covers about 2.5 million square kilometers (one million square miles), while the Strait is only about 13 kilometers (8 miles) wide. Sediment samples from the bottom of the Mediterranean Sea that include evaporite minerals, soils, and fossil plants show that about five million years ago the Strait was topographically blocked and the Sea had evaporated into a deep basin far lower in elevation than the oceans. Consequent changes in the world's hydrologic cycle, including effects upon ocean salinity, likely led to more ice formation in polar regions and more reflection of sunlight back to space, resulting in a cooler global climate at that time. Today, topography plays a key role in our regional climate patterns. But through Earth history, topographic change, even perhaps over areas as small as 13 kilometers across, has also affected the global climate. This image was generated from a Landsat satellite image draped over an elevation model produced by the Shuttle Radar Topography Mission (SRTM). The view is eastward with a 3-times vertical exaggeration to enhance topographic expression. Natural colors of the scene (green vegetation, blue water, brown soil, white beaches) are enhanced by image processing, inclusion of some infrared reflectance (as green) to highlight the vegetation pattern, and inclusion of shading of the elevation model to further highlight the topographic features. Landsat has been providing visible and infrared views of the Earth since 1972. SRTM elevation data matches the 30-meter (99-feet) resolution of most Landsat images and will substantially help in analyses of the large Landsat image archive. Elevation data used in this image was acquired by the Shuttle Radar Topography Mission (SRTM) aboard the Space Shuttle Endeavour, launched on February 11, 2000. SRTM used the same radar instrument that comprised the Spaceborne Imaging Radar-C/X-Band Synthetic Aperture Radar (SIR-C/X-SAR) that flew twice on the Space Shuttle Endeavour in 1994. SRTM was designed to collect three-dimensional measurements of the Earth's surface. To collect the 3-D data, engineers added a 60-meter-long (200-foot) mast, installed additional C-band and X-band antennas, and improved tracking and navigation devices. The mission is a cooperative project between the National Aeronautics and Space Administration (NASA), the National Imagery and Mapping Agency (NIMA) of the U.S. Department of Defense (DoD), and the German and Italian space agencies. It is managed by NASA's Jet Propulsion Laboratory,
Where Europe meets Africa
PIA04376
Sol (our sun)
Multi-angle Imaging SpectroR …
Title Where Europe meets Africa
Original Caption Released with Image Data from a portion of the imagery acquired by the Multi-angle Imaging SpectroRadiometer's vertical-viewing (nadir) camera during 2000-2002 were combined to create this cloud-free natural-color mosaic of southwestern Europe and northwestern Morocco and Algeria. The image extends from 48°N, 16°W in the northwest to 32°N, 8°E in the southeast. It is displayed in Albers conic equal-area projection (a projection which is frequently used for equal-area maps of regions that are predominantly east-west in extent). From the northeast, the image traverses a portion of the Swiss Alps (partially snow-covered) and a small part of Italy's Po Valley. The northern portion of the image also includes the western coast of France and much of southern and southwestern France's undulating terrain, which continues until reaching the hills of the Pyrenees. The Pyrenees act as the natural frontier to the Iberian Peninsula -- a landmass comprised of Spain and Portugal. The Peninsular landscapes are extremely varied, with some almost desert-like, others green and fertile. About half of Spain is situated atop a high plain, known as the Central Plateau, and many mountain ranges, rivers, geological basement rock and vegetation types are found across this great plateau. The largest alluvial plain is Andalusia in the south, where the valley of the Guadalquivir River is shut in by mountain ranges on every side except the southwest, where the valley descends to the Atlantic. The islands of Mallorca, Menorca and Ibiza are Spanish territories in the western Mediterranean. At the Strait of Gibralter, Spain and Morocco very nearly kiss, and Morocco appears relatively verdant along its northern coastal corner. The rugged Atlas Mountain ranges traverse northern Algeria and Morocco. The Multi-angle Imaging SpectroRadiometer observes the daylit Earth continuously from pole to pole, and every 9 days views the entire globe between 82 degrees north and 82 degrees south latitude. This data product was generated from a portion of the imagery acquired during 2000-2002. MISR was built and is managed by NASA's Jet Propulsion Laboratory, Pasadena, CA, for NASA's Office of Earth Science, Washington, DC. The Terra satellite is managed by NASA's Goddard Space Flight Center, Greenbelt, MD. JPL is a division of the California Institute of Technology.
SeaWinds Global Coverage wit …
PIA02455
Sol (our sun)
SeaWinds Scatterometer
Title SeaWinds Global Coverage with Detail of Hurricane Floyd
Original Caption Released with Image The distribution of ocean surface winds over the Atlantic Ocean, based on September 1999 data from NASA's SeaWinds instrument on the QuikScat satellite, shows wind direction (white streamlines) at a resolution of 25 kilometers (15.5 miles), superimposed on the color image indicating wind speed. Over the ocean, the strong (seen in violet) trade winds blow steadily from the cooler subtropical oceans to warm waters just north of the equator. The air rises over these warm waters and sinks in the subtropics at the horse latitudes. Low wind speeds are indicated in blue. In the mid-latitudes, the high vorticity caused by the rotation of the Earth generates the spirals of weather systems. The North Atlantic is dominated by a high-pressure system, whose anti-cyclonic (clockwise) flow creates strong winds blowing parallel to the coast of Spain and Morocco. This creates strong ocean upwelling and cold temperature. Hurricane Floyd, with its high winds (yellow), is clearly visible west of the Bahamas. Tropical depression Gert is seen as it was forming in the tropical mid-Atlantic (as an anti-clockwise spiral), it later developed into a full-blown hurricane. Because the atmosphere is largely transparent to microwaves, SeaWinds is able to cover 93 percent of the global oceans, under both clear and cloudy conditions, in a single day, with the capability of a synoptic view of the ocean. The high resolution of the data also gives detailed description of small and intense weather systems, like Hurricane Floyd. The image in the insert is based on data specially produced at 12.5 kilometers (7.7 miles). In the insert, white arrows of wind vector are imposed on the color image of wind speed. The insert represents a 3-degree area occupied by Hurricane Floyd. After these data were acquired, Hurricane Floyd turned north. Its strength and proximity to the Atlantic coast of the U.S. caused the largest evacuation of citizens in U.S. history. Its landfall on September 16, 1999 resulted in severe flooding and devastation in the Carolinas. The high-resolution SeaWinds data provided an opportunity to monitor and study this hurricane. NASA's Earth Science Enterprise is a long-term research and technology program designed to examine Earth's land, oceans, atmosphere, ice and life as a total integrated system. JPL is a division of the California Institute of Technology, Pasadena, CA.
View of the Straits of Gibra …
Title View of the Straits of Gibraltar from Gemini 5
Description View of the Straits of Gibraltar, looking northeast, Morocco in foreground, Spain in background taken from the Gemini 5 spacecraft in orbit over the Earth. This view was taken during the spacecraft's 14th revolution of the earth.
Date Taken 1965-08-21
Strait of Gibraltar
Title Strait of Gibraltar
Description Gateway to the Atlantic, since ancient times the Strait of Gibraltar (36.5N, 4.5W) is also the border between Africa and Europe. In Spain to the north, the dark area near the coast is the delta of the Guadalquivir River and the city of Seville. The small spike of land on the north side of the strait is the actual Rock of Gibraltar. On the African side, a cloud front cutting across from the coast is blowing into Europe from Morocco and Algeria.
Date Taken 1973-06-22
Strait of Gibraltar
Title Strait of Gibraltar
Description The Strait of Gibraltar (36.0N, 5.5W), at the mouth of the Mediterranean Sea, separates Europe and Africa. On the Spanish side of the strait, the port of Cadiz and the Rota Naval Base as well as the great Andalucian city of Seville can be seen. To the south in Morocco, the coastal cities of Tangier, Tetouan and Ceuta are easily seen.
Date Taken 1981-10-14
Area of Spanish Sahara, Maur …
Title Area of Spanish Sahara, Mauritania, Algeria, Morocco as seen from Gemini 10
Description Area of Spanish Sahara, Mauritania, Algeria, Morocco, looking north into Hamada Du Dra, as seen from the Gemini 10 spacecraft.
Date Taken 1966-07-18
Gibraltar, Spain, Portugal, …
Title Gibraltar, Spain, Portugal, Morocco and Atlantic Ocean as seen from Gemini 10
Description Venezuela, British Guyana, Surinam, and Trindad, as seen from the Gemini 10 spacecraft. On left is mouth of Orinoco River in Venezuela. Mouth of Essequibo River in British Guyana is in right center.
Date Taken 1966-07-18
Straits of Gibralter, Medite …
Title Straits of Gibralter, Mediterranean Sea, Spain as seen from Gemini 10
Description Straits of Gibralter, Mediterranean Sea, Spain in background, Algeria and Morocco in foreground as seen from Gemini 10 spacecraft.
Date Taken 1966-07-18
Strait of Gibraltar
Title Strait of Gibraltar
Description The Strait of Gibraltar as seen from the south (36.0N, 5.5W). This scene shows the actual Rock of Gibraltar under cloud cover but most of the Strait of Gibraltar, at the mouth of the Mediterranaen Sea and the Atlantic Ocean, can be seen in good detail. Despite the obliquity of the scene, much of the beauty of the Spanish and Moroccan countryside can still be appreciated.
Date Taken 1982-03-30
STS-56 Earth observation of …
Title STS-56 Earth observation of the Strait of Gibraltar
Description STS-56 Earth observation taken aboard Discovery, Orbiter Vehicle (OV) 103, is of the Strait of Gibraltar. A small bank of clouds marks the passage between Spain and Morocco at the western edge of the Mediterranean Sea. This passage, one of the two Pilars of Hercules of the Ancient Greeks, is now known as the Strait of Gibraltar. The cities of Cadiz on the Atlantic Coast of Spain and Malaga on the Mediterranean coast, as well as Tangier, Morocco (facing the strait), can be seen. According to NASA scientists studying the STS-56 photos, a subtle difference in the water color on the Atlantic side suggests that a pulse of surface water had recently flowed out of the Mediterranean into the Atlantic.
Date Taken 1993-04-17
Strait of Gibraltar as seen …
Title Strait of Gibraltar as seen from STS-58
Description Atlantic water flowing with the tide throught the Strait of Gibraltar into the Mediterranean generates internal waves as depicted inthis photo. They can be seen in the Space Shuttle photo because of sunglint which reflects off the water. The Bay of Cadiz on the southwest coast of Spain, the Rock of Gibraltar, and Moroccan coast are also visible in this photo.
Date Taken 1993-10-20
Morocco and border of spain …
Title Morocco and border of spain as seen from STS-59
Description The Atlantic Ocean, Straits of Gibraltar, and Alboran Sea (the westernmost portion of the Mediterranean Sea) separate Spain on the left from Morocco on the right. Algeciras Harbor is the prominent notch cut out of the eastern end of the north shore of the Strait, the Rock of Gibraltar is the tiny arrowhead that separates the notch from the Alboran Sea. The Sierra Nevada, farther away down the Spanish coast, lives up to its name in this April scene. The difference in elevation between the Sierra Morena and the Guadalquivir River valley is highlighted nicely by cumulus clouds. Tangier, Morocco can be seen as a light-toned spot on the southern shore of the Strait, near the entrance to the Atlantic Ocean.
Date Taken 1994-04-14
Strait of Gibraltar seen fro …
Title Strait of Gibraltar seen from STS-66
Description Swift currents flow through the Strait of Gibraltar, producing complicated patterns in the surface waters. Some of those patterns are highlighted in the sunglint in this photograph. The Mediterranian Sea is on the upper right, the Atlantic Ocean in in the lower left. Few features can be seen on the Mediterranian side, but current shears (straight lines coming off Spain), several sets of internal waves (impinging on the Spanish continental shelf) and ship wakes can be seen on the Atlantic side, west of Cadiz. Both Tangier and Cadiz show up in the sunglint as well.
Date Taken 1994-11-14
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