Earth from Space - Image Information

LOCATION Direction Photo #: ISS064-E-6310 Date: Nov. 2020
Geographic Region: SAUDI ARABIA


Long-sustained westerly winds shaped the dunes surrounding the Saudi Arabian oasis of Jubbah in this photograph shot by an astronaut from the International Space Station (ISS). Jubbah sits in the protective wind shadow of Jabel Umm Sinman, which roughly translates from Arabic as "two camel-hump mountain"(// The hard, black rock of the mountain disrupts wind flow and blocks dunes from forming on its lee side. The area around Jabel Umm Sinman has been at the center of significant climatic and anthropological shifts during the Holocene, a geologic term for the past 10,000 years.

Jubbah is built in the basin of a paleolake in the middle of the Nefud Desert, about 650 kilometers (400 miles) northwest of Riyadh. A paleolake is an area where a lake previously existed, but no longer holds any water due to a change in climate. Today the ancient lakebed rests hundreds of feet below the neighboring dunes.

Prior to the desertification of the Arabian Peninsula, Jubbah Lake was one of a network of freshwater sources in what was then a more humid environment. Even as the region became more arid, Jubbah Lake likely continued to hold freshwater for some time due to its position amid the groundwater-recharging dunes. This continuous, extended period of freshwater made Jubbah a destination for early humans and animals in the Nefud Desert.

Among the dunes to the north of the city, a highway extends north-south through the desert, following a path historically taken by caravan traders. The highway and the modern agriculture - evident in the telltale circular fields of center-pivot irrigation - are just the latest iteration of human activity in the area. The mountain also contains petroglyphs that record the lifestyle and culture of early inhabitants. The petroglyphs, declared a UNESCO World Heritage Site, have been instrumental for archeologists and historians seeking to understand occupation and settlement patterns in the region.

Images: All Available Images Low-Resolution 615k
Mission: ISS064  
Roll - Frame: E - 6310
Geographical Name: SAUDI ARABIA  
Center Lat x Lon: 28.0N x 41.1E
Film Exposure:   N=Normal exposure, U=Under exposed, O=Over exposed, F=out of Focus
Percentage of Cloud Cover-CLDP: 10
Camera:: N8
Camera Tilt: 33   LO=Low Oblique, HO=High Oblique, NV=Near Vertical
Camera Focal Length: 400  
Nadir to Photo Center Direction: SE   The direction from the nadir to the center point, N=North, S=South, E=East, W=West
Stereo?:   Y=Yes there is an adjacent picture of the same area, N=No there isn't
Orbit Number:  
Date: 20201126   YYYYMMDD
Time: 122603   GMT HHMMSS
Nadir Lat: 30.0N  
Latitude of suborbital point of spacecraft
Nadir Lon: 39.8E  
Longitude of suborbital point of spacecraft
Sun Azimuth: 229   Clockwise angle in degrees from north to the sun measured at the nadir point
Space Craft Altitude: 224   nautical miles
Sun Elevation: 20   Angle in degrees between the horizon and the sun, measured at the nadir point
Land Views:  
Water Views:  
Atmosphere Views:  
Man Made Views:  
City Views:  

Photo is not associated with any sequences

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