29 Sep '13, 2pm

Star Dunes in Algeria [image] #NASA

In some areas, winds tend to blow in roughly the same general direction all year. The Grand Erg Oriental, a sprawling sea of sand dunes in the Saharan Desert, is not one of them. The winds in northeastern Algeria tend to be complex and changing. Easterly summer winds shift in the winter, becoming westerly. Meanwhile, passing storms and local geographical features further muddle the picture. If winds came consistently from one direction, crescent-shaped barchan dunes would reign. But the dominant dune type along the southern edge of Grand Erg Oriental (shown above) are large, pyramid-shaped star dunes, which only form in areas where winds blow from multiple directions. The image was acquired by the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) on NASA’s Terra satellite on October 27, 2012. It was made from a combination of near-infrared and visible ...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=81996&s...

Tweets

Star Dunes in Algeria: Complex wind patterns le...

earthobservatory.nasa.gov 28 Sep '13, 10pm

In some areas, winds tend to blow in roughly the same general direction all year. The Grand Erg Oriental, a sprawling sea ...

Long Island Sound Region at Night #image #NASA

earthobservatory.nasa.gov 29 Sep '13, 10pm

Long Island Sound is an estuary along the upper East Coast of the United States, bounded by Long Island (New York state) t...

Star Wars Character Or Type Of Coffee?

Star Wars Character Or Type Of Coffee?

sprudge.com 30 Sep '13, 11pm

These days, most days really, you go to any number of fantastic coffee places out there and drink drop dead delicious coff...

オマーン湾で撮影された、米海軍のMH-60RシーホークとMH-60Sシーホーク(どちらがどちらだかよくわかりません)

オマーン湾で撮影された、米海軍のMH-60RシーホークとMH-60Sシーホーク(どちらがどちら...

navy.mil 08 Oct '13, 12am

GULF OF OMAN (Oct. 3, 2013) An MH-60S Sea Hawk helicopter, foreground, assigned to the Dusty Dogs of Helicopter Sea Combat...

空母ハリー・トルーマンの飛行甲板で、F/A-18Cホーネットの機体をお掃除する海軍兵たち。華やかなパイロットを支えているのは、こういった日々の地味な作業なのです。 

空母ハリー・トルーマンの飛行甲板で、F/A-18Cホーネットの機体をお掃除する海軍兵たち。華や...

navy.mil 08 Oct '13, 8am

GULF OF OMAN (Oct. 06, 2013) Aviation Machinist's Mate 3rd Class Brandon Shreve, left, and Aviation Machinist's Mate 3rd C...

Long Island Sound Region at Night: City lights ...

earthobservatory.nasa.gov 29 Sep '13, 10pm

Long Island Sound is an estuary along the upper East Coast of the United States, bounded by Long Island (New York state) t...

空母ニミッツに着艦アプローチをするF/A-18を、少し離れたところから見るとこんな感じ→ 

navy.mil 10 Oct '13, 8am

U.S. 5TH FLEET AREA OF RESPONSIBILITY (Oct. 3, 2013) An F/A-18 Hornet lands on the flight deck aboard the aircraft carrier...

メンテナンスの為、ノーフォークでドライドック入りしている空母アイゼンハワー。右舷側の錨を取り外すため地面に安定させようとしているところ。 

メンテナンスの為、ノーフォークでドライドック入りしている空母アイゼンハワー。右舷側の錨を取り外...

navy.mil 02 Oct '13, 6am

NORFOLK (Sept. 24, 2013) Norfolk Naval Shipyard workers stabilize the starboard anchor of the aircraft carrier USS Dwight ...

取り外し作業の行われている空母アイゼンハワーの錨。この大きな錨は重さが30トンあり、錨に繋がる鎖のリンク1つの重さは約126kgあります。 

取り外し作業の行われている空母アイゼンハワーの錨。この大きな錨は重さが30トンあり、錨に繋がる...

navy.mil 02 Oct '13, 6am

NORFOLK (Sept. 24, 2013) Norfolk Naval Shipyard workers stabilize the starboard anchor of the aircraft carrier USS Dwight ...

VIDEO: LG demonstrates G2's Optical Image Stabilisation with a chicken

VIDEO: LG demonstrates G2's Optical Image Stabi...

soyacincau.com 28 Sep '13, 7am

flagship smart phone boast a new 13MP camera which comes with Optical Image Stabilisation. To demonstrate how Optical Imag...

Retired AF doctor, Navy flight surgeon and Mari...

navytimes.com 29 Sep '13, 2pm

During Col. (Dr.) James Ruffer’s 30 years of service, he wore three uniforms — of the Marine Corps, Navy and Air Force. He...