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May 2017
PHOTOGRAMMETRIC ENGINEERING & REMOTE SENSING
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PHOTOGRAMMETRIC ENGINEERING
& REMOTE SENSING
J
ournal
S
taff
Publisher ASPRS
Editor-In-Chief Alper Yilmaz
Technical Editor Michael S. Renslow
Assistant Editor Jie Shan
Assistant Director — Publications Rae Kelley
Electronic Publications Manager/Graphic Artist Matthew Austin
Photogrammetric Engineering & Remote Sensing
is the official journal of the
American Society for Photogrammetry and Remote Sensing. It is devoted to the
exchange of ideas and information about the applications of photogrammetry,
remote sensing, and geographic information systems. The technical activities of
the Society are conducted through the following Technical Divisions: Geographic
Information Systems, Photogrammetric Applications, Lidar, Primary Data
Acquisition, Professional Practice, and Remote Sensing Applications. Additional
information on the functioning of the Technical Divisions and the Society can
be found in the Yearbook issue of
PE&RS
.
Correspondence relating to all business and editorial matters pertaining to this
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Photogrammetry and Remote Sensing, 425 Barlow Place, Suite 210, Bethesda,
Maryland 20814-2144, including inquiries, memberships, subscriptions, changes
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PE&RS
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. Copyright by the American Society for Photogrammetry and
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An astronaut aboard the International Space Station took this photograph of the city
lights of Naples and the Campania region of southern Italy. A regional view of Italy from
2014 shows the Naples region to be one of the brightest in the country. Roughly three
million people live in and around this metropolitan area.
The different colors of lights in the scene reflect some of the history of develop-
ment in the area. The green lights are mercury vapor bulbs, an older variety that has
been replaced in newer developments by orange sodium bulbs (yellow-orange). To the
northeast, the lightless gaps between the homes and businesses are agricultural fields.
The bright yellow-orange complex amidst the fields is the CIS emporium, the largest
commercial retail facility in Europe.
The large black circular area in the photo is Mount Vesuvius, the only active volcano
on Europe’s mainland. Vesuvius is a stratovolcano, made up of different materials—
pyroclastic flows, lava flows, and debris from lahars—that accumulated to form the
volcanic cone. Although any volcanic materials can endanger surrounding communities,
pyroclastic flows of superheated ash and gas are among the most dangerous, moving
at speeds of hundreds of kilometers per hour. The cities of Pompeii and Herculaneum
were destroyed in 79 AD by pyroclastic flows, which trapped more than 16,000 people.
Such historic catastrophes—and the fact that 600,000 people live in the immediate
vicinity—are the reason the volcano is one of the most heavily monitored in the world,
with several dozen sensors located at many points on and around the cone. By dating
lavas, scientists know that Mount Vesuvius has had eight major eruptions in the past
17,000 years.
Vesuvius is part of the Campanian Volcanic Arc which includes the Campi Flegrei calde-
ra/geothermal field to the west of Naples near Agnano and Mount Etna in Sicily.
Credit:
Astronaut photograph ISS050-E-37024 was acquired on January 30, 2017, with a Nikon
D4 digital camera using a 400 millimeter lens, and is provided by the ISS Crew Earth
Observations Facility and the Earth Science and Remote Sensing Unit, Johnson Space
Center. The image was taken by a member of the Expedition 50 crew. The image has
been cropped and enhanced to improve contrast, and lens artifacts have been removed.
The International Space Station Program supports the laboratory as part of the ISS Na-
tional Lab to help astronauts take pictures of Earth that will be of the greatest value
to scientists and the public, and to make those images freely available on the Internet.
Additional images taken by astronauts and cosmonauts can be viewed at the NASA/
JSC Gateway to Astronaut Photography of Earth. Caption by Andi Hollier, Hx5, JETS
Contract at NASA-JSC.
To view the full image, visit
.
