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Image: Penobscot River Work - Station 2
Penobscot River Work - Station 2
Penobscot River Work - Station 2
Penobscot River Work - Station 2

This photo from our second cross section is an example of significant changes to the river. Data was collected from this location in 2009 from a manned boat, with no issue. Upon return to the same cross section in 2013 we found a 2-4 ft hydraulic feature exposed. Backwater from the Great Works Dam hid this feature previously. 

This photo from our second cross section is an example of significant changes to the river. Data was collected from this location in 2009 from a manned boat, with no issue. Upon return to the same cross section in 2013 we found a 2-4 ft hydraulic feature exposed. Backwater from the Great Works Dam hid this feature previously. 

Image: Penobscot River Work - Station 4
Penobscot River Work - Station 4
Penobscot River Work - Station 4
Penobscot River Work - Station 4

A photo from August 2013 after removal of the Great Works Dam, showing the old concrete, wood and stone cribbing upstream of where the dam used to be.

A photo from August 2013 after removal of the Great Works Dam, showing the old concrete, wood and stone cribbing upstream of where the dam used to be.

Image: Penobscot River Work - Station 4
Penobscot River Work - Station 4
Penobscot River Work - Station 4
Penobscot River Work - Station 4

A photo from August 2013 showing the cribbing upstream of where the dam used to be. See the photo titled 'Station 4 2009' for a picture from before the dam was removed from the same general perspective.

A photo from August 2013 showing the cribbing upstream of where the dam used to be. See the photo titled 'Station 4 2009' for a picture from before the dam was removed from the same general perspective.

Image: Lewy Lake Station 01019300
Lewy Lake Station 01019300
Lewy Lake Station 01019300
Lewy Lake Station 01019300

USGS lake elevation gage on Lewy Lake at Princeton, Maine, station 01019300. 

Image: Florida Panther
Florida Panther
Florida Panther
Florida Panther

Florida panther; Puma concolor coryi, remains one of the most endangered mammals in the world.

Florida panther; Puma concolor coryi, remains one of the most endangered mammals in the world.

Image: Mw6.6 Lushan China Earthquake, April 20 2013
Mw6.6 Lushan China Earthquake, April 20 2013
Mw6.6 Lushan China Earthquake, April 20 2013
Mw6.6 Lushan China Earthquake, April 20 2013

Firemen and the rescue team building tents for homeless people in a middle school square.

Image: Muir Inlet
Muir Inlet
Muir Inlet
Muir Inlet

Muir Glacier has retreated more than 2 km and ceased to have a tidewater terminus. Note that the retreat of Muir Glacier has left several ice-cored morainal mounds between the shoreline and the terminus.

Muir Glacier has retreated more than 2 km and ceased to have a tidewater terminus. Note that the retreat of Muir Glacier has left several ice-cored morainal mounds between the shoreline and the terminus.

Image: Mbatuitui (Tringa flavipes, Tringa melanoleuca)
Mbatuitui (Tringa flavipes, Tringa melanoleuca)
Mbatuitui (Tringa flavipes, Tringa melanoleuca)
Image: Gastrocopta germindens
Gastrocopta germindens
Gastrocopta germindens
Gastrocopta germindens

Gastrocopta germindens shell viewed with a scanning electron microscope.

Image: Gastrocopta gularis
Gastrocopta gularis
Gastrocopta gularis
Gastrocopta gularis

Gastrocopta gularis shell viewed with a scanning electron microscope.

Gastrocopta gularis shell viewed with a scanning electron microscope.

Image: Strobilops sp.
Strobilops sp.
Strobilops sp.
Strobilops sp.

Strobilops sp. shell viewed with a scanning electron microscope with aperture facing up.

Strobilops sp. shell viewed with a scanning electron microscope with aperture facing up.

Image: Wandering Snag Snail (Gastrocopta servilis)
Wandering Snag Snail (Gastrocopta servilis)
Wandering Snag Snail (Gastrocopta servilis)
Wandering Snag Snail (Gastrocopta servilis)

Gastrocopta servilis shell viewed with a scanning electron microscope with a zoom-in of the aperture.

Image: Spiraxis sp.
Spiraxis sp.
Spiraxis sp.
Spiraxis sp.

Spiraxis sp. shell viewed with a scanning electron microscope with aperture facing up.

Spiraxis sp. shell viewed with a scanning electron microscope with aperture facing up.

Image: Thysanophora crinita
Thysanophora crinita
Thysanophora crinita
Thysanophora crinita

Close-up view of Thysanophora crinita shell viewed with a scanning electron microscope.

Close-up view of Thysanophora crinita shell viewed with a scanning electron microscope.

Image: Miradiscops panamensis
Miradiscops panamensis
Miradiscops panamensis
Miradiscops panamensis

Miradiscops panamensis shell viewed with a scanning electron microscope with aperture facing up.

Miradiscops panamensis shell viewed with a scanning electron microscope with aperture facing up.

Image: Chanomphalus pilsbryi
Chanomphalus pilsbryi
Chanomphalus pilsbryi
Chanomphalus pilsbryi

Bottom view of Chanomphalus pilsbryi shell  viewed with a scanning electron microscope.

Bottom view of Chanomphalus pilsbryi shell  viewed with a scanning electron microscope.

Image: Geologic Studies on Sitkinak Island, Alaska
Geologic Studies on Sitkinak Island, Alaska
Geologic Studies on Sitkinak Island, Alaska
Geologic Studies on Sitkinak Island, Alaska

Geologists driving a core into marsh sediment to document interbedded peat and silt that records sudden vertical land movements associated with megathrust fault slip during large earthquakes.

Geologists driving a core into marsh sediment to document interbedded peat and silt that records sudden vertical land movements associated with megathrust fault slip during large earthquakes.

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