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Posts tagged Baltimore

Bays and Cities Along USA’s East Coast

40.2N 74.7W

October 25th, 2012 Category: Sediments

USA – October 22nd, 2012

Several important cities and state capitals can be seen as grey areas along the east coast of the United States of America. From upper right to lower left we can observe New York City, Newark, Trenton, Philadelphia, Baltimore and Washington, D.C. Sediments can be observed in Delaware Bay (between southern New Jersey and Delaware, near the image center), though fewer are visible in Chesapeake Bay (southwest of the former).

East Coast Cities and Appalachian Mountains, USA – March 14th, 2012

39.2N 76.6W

March 14th, 2012 Category: Image of the day, Mountains

USA - March 11th, 2012

Multiple cities can be observed along the eastern coast of the United States of American in this image, appearing as grey areas (best observed upon opening the full image). From the upper right, moving southwestward near the shoreline, one can see Boston, Massachusetts; Providence, Rhode Island; New York City, New York; Trenton, New Jersey; Philadelphia, Pennsylvania; Baltimore, Maryland; and Washington, D.C.

Visible further east are the Appalachian Mountains. The Appalachian chain is a barrier to east-west travel as it forms a series of alternating ridgelines and valleys oriented in opposition to any road running east-west. These alternating ridgelines and valley appear as alternating lines of brown and green, respectively.

Chesapeake Bay and Albemarle and Pamlico Sounds, USA

39.2N 76.6W

November 13th, 2010 Category: Snapshots

USA - October 12th, 2010

The cities of Baltimore, Maryland and Washington, DC can be observed near the east coast of the United States of America, in the upper right quadrant. Baltimore is located along the Chesapeake Bay, while Washington is further inland to the south.

A series of bays can be seen along the coast. North of the Chesapeake Bay is Delaware Bay, lighter in color. To the south of the Chesapeake are the Albemarle Sound and the Pamlico Sound (below the former), in the state of North Carolina. Greenish sediments and algal growth can be seen in both.

Contours of Chesapeake Bay Coastline, USA – May 30th, 2009

37.5N 76.1W

May 30th, 2009 Category: Fires, Image of the day, Rivers

Chesapeake Bay, USA - May 21st, 2009

Chesapeake Bay, USA - May 21st, 2009

The Chesapeake Bay (middle) is the largest estuary in the United States. It lies off the Atlantic Ocean, surrounded by Maryland (above) and Virginia (below). Parts of the states of Delaware and New Jersey are also visible in the upper right quadrant. Also of note is a plume of smoke at the lower left, from a fire in Virginia.

The Chesapeake Bay stretches about 200 miles (300 km) from the Susquehanna River in the north to the Atlantic Ocean in the south. The Chesapeake Bay is the ria, or drowned valley, of the Susquehanna, meaning that it was where the river flowed when the sea level was lower.

Much of the bay is quite shallow. At the point where the Susquehanna River flows into the bay, the average depth is 30 feet (9 m), although this soon diminishes to an average of 10 feet (3 m) from the city of Havre de Grace for about 35 miles (56 km), to just north of Annapolis.

In this image, sun glint makes the water of the bay appear whitish, and thus highlights the contours of the coastline. However, despite the glint it is still possible to observe some greenish sediments flowing into the bay.

Since the bay is an estuary, it has fresh water and brackish water. Brackish water has three salinity zones — oligohaline (little salt, freshwater species able to survive), mesohaline (medium amount of salt), and polyhaline (very salty, sometimes as much as sea water).

In the Chesapeake Bay, the fresh water zone runs from the mouth of the Susquehanna River to north Baltimore.  The mesohaline zone reaches from the Bay Bridge to the mouth of the Rapahannock River, and the salty polyhaline zone runs from the mouth of the Rappahannock River to the mouth of the bay.