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Lakes Trasimeno and Bolsena, Italy

October 23rd, 2009 Category: Lakes

Italy - September 24th, 2009

Italy - September 24th, 2009

Sediments swirl in the Adriatic Sea off the east coast of Italy. Located near the center of the shoreline visible here is the port city of Ancona. Moving southwest across the Apennines, two lakes are visible: the green Lake Trasimeno and the dark blue Lake Bolsena.

Lake Trasimeno (or Trasimene) is the largest lake on the Italian peninsula south of the River Po, with a surface area of 128 km², slightly less than Lake Como. Trasimeno is surrounded for half of its shores by hills.

The Tiber River flows some thirty kilometers to the east of the lake, but the lake and the river are separated by hills: no major river flows directly into or out of Lake Trasimeno, and the water level fluctuates significantly according to rainfall levels and the seasonal demands from the towns, villages and farms near the shore.

Lake Bolsena, on the other hand, is a crater lake of volcanic origin, which was formed starting 370,000 years ago following the collapse of a caldera of the Vulsini volcanic complex into a deep aquifer. The lake is supplied entirely from the aquifer, rainfall and runoff, with one outlet at the southern end.

The lake has an oval shape typical of crater lakes. The long axis of the ellipse is aligned in a north-south direction. The bottom is roughly conical reaching a maximum depth at a point in the middle. The entire lake is surrounded by hills on the flanks and summits of which are the comuni. Elevations on the north of the lake are the highest, with a maximum of 702 m (2,300 ft).

The River Po Between the Alps and the Apennines – October 6th, 2009

October 6th, 2009 Category: Image of the day, Lakes, Rivers

Italy - September 1st, 2009

Italy - September 1st, 2009

The River Po meanders its way eastward across northern Italy, spilling greenish sediments through its delta into the Adriatic Sea. These sediments flank the coastline from Venice, north of the delta, to Ancona (in the bottom right corner of the full image). Also visible in the full image is the city of Trieste, near the border with Croatia, in the upper right.

To the north, the blue waters of Lake Garda are visible above the River Po at the foot of the Alps. Little snow can be seen on the mountains due to the warm summer temperatures. To the south, below the Po, the Apennines are also visible

Sediments Along Italian Adriatic Coast

41.7N 15.7E

June 10th, 2009 Category: Snapshots

Italy - May 30th, 2009

Italy - May 30th, 2009

In the full image, the eastern coast of Italy along the Adriatic Sea is visible from the Promontorio del Gargano peninsula in Apulia, right, to the port city of Ancona,  in the Marche.

Green sediments frame the length of the coastline from Ancona to the Promontorio del Gargano, spilling around the tip of the peninsula and into the waters of the Gulf of Manfredonia, to its East.

Green sediments are also present along the coast of the Gulf of Manfredonia, though they appear slightly less concentrated.

Snowfall over the Alps – October 7th, 2008

October 7th, 2008 Category: Image of the day

Snowfall over the Alps - October 5th, 2008

Snowfall over the Alps - October 5th, 2008

In this beautiful, virtually cloud-free image of northern Italy we can clearly see the recent snowfall covering the Alps as well as a striking green algal bloom along the eastern coastline.

The Alps are generally divided into the Western Alps and the Eastern Alps. The division is along the line between Lake Constance and Lake Como, following the Rhine. The Western Alps are higher, but their central chain is shorter and curved; they are located in Italy, France and Switzerland.

The Eastern Alps (main ridge system elongated and broad) belong to Austria, Germany, Italy, Liechtenstein, Slovenia and Switzerland. The highest peaks of the Western Alps are Mont Blanc, 4,808 metres (15,774 ft), Mont Blanc de Courmayeur 4,748 metres (15,577 ft), the Dufourspitze 4,634 metres (15,203 ft) and the other summits of the Monte Rosa group, and the Dom, 4,545 metres (14,911 ft). The highest peak in the Eastern Alps is Piz Bernina, 4,049 metres (13,284 ft).

source Wikipedia

Image Close-ups

Algal Blooms along the Adriatic coast

Algal Blooms along the Adriatic coast

Lake Constance

Lake Constance

Lake Garda, Italian Alps

Lake Garda, Italian Alps

In the picture on the left, we can take a more detailed look at the green Algal Blooms along the eastern coast of Italy, reaching in this image from Trieste in the upper area to Ancona in the lower area. The lagoon of Venice is visible on the left, as is the mouth of the River Po.

In the center of the first image on the right is Lake Garda, the largest lake in Italy, which was formed by glaciers at the end of the last ice age. An algal bloom is visible on its southern shore. We can also see the River Po winding its way across the land south of the lake.

In the second close-up on the right, we get a more detailed look at the snow covering the Alps, as well as Lake Constance in the upper left quadrant, which shares a triple border with Switzerland, Germany and Austria. This triple border is particular in that there is no official legal agreement regarding the exact boundaries among the three countries within the lake.

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