Dear Leônidas Luiz

In my early years as a student in, Photogeology primarily entailed the mapping of dips, strikes, fold axes, faults, and stratigraphic contacts on stereoscopically-viewed black-and-white photos. Of course, we are talking about a long time ago, there was no Internet, and less than Google maps.

The methods of creating images differs between the two techniques, as does the application of such images most of the time. Aerial photogeology of the Earth´s surface is a passive form of remote sensing generated from cameras mounted on aircraft, satellites and another spacecraft. The photos are taken every 10 to 30 s as an aircraft follows a systematic overlapping flight pattern at a fixed altitude. Each picture slightly overlaps the preceding one so that a stereoscopic or 3D image can be produced to a easily geological interpretation.

The spectral sensitivity of aerial photogeology is limited portion of the electromagnetic spectrum, e.g., from low-frequency radio waves through gamma-ray, and, therefore, the photo geology is not restricted by time of the day, weather conditions, and environmental variances.

The Photogeology is still a usual field within Geology, but the study of aerial photographs can't substitute the field investigations but rather it helps and contributes to them. The advantages of the study of the aerial photographs can be listed as follows:

a. it saves time

b. it provides to observe a larger area

c. it has more detailed ground surface than maps

d. photographs can be studied anytime and at anywhere

e. studies carried out on the photographs are cheaper than studies in the field

f. studies carried out on the aerial photographs are easier than studies in the field.

I attached a useful material for your better comprehension,

best wishes, Mario E. Sigismondi

Photogeology is the study of Geological features through aerial photography. It is the study of structural elements on the earth through taking of photography using aircraft, without being in contact with it. It is a form of remote sensing. Very rough and rugged terrains where accessibility is extremely difficult are best studies through photogeology.

Leônidas Luiz Volcato Descovi Filho

https://www.bgs.ac.uk/downloads/start.cfm?id=1937

to gather information about our earth through taking photographs from aerial view

Dear Leônidas Luiz

In my early years as a student in, Photogeology primarily entailed the mapping of dips, strikes, fold axes, faults, and stratigraphic contacts on stereoscopically-viewed black-and-white photos. Of course, we are talking about a long time ago, there was no Internet, and less than Google maps.

The methods of creating images differs between the two techniques, as does the application of such images most of the time. Aerial photogeology of the Earth´s surface is a passive form of remote sensing generated from cameras mounted on aircraft, satellites and another spacecraft. The photos are taken every 10 to 30 s as an aircraft follows a systematic overlapping flight pattern at a fixed altitude. Each picture slightly overlaps the preceding one so that a stereoscopic or 3D image can be produced to a easily geological interpretation.

The spectral sensitivity of aerial photogeology is limited portion of the electromagnetic spectrum, e.g., from low-frequency radio waves through gamma-ray, and, therefore, the photo geology is not restricted by time of the day, weather conditions, and environmental variances.

The Photogeology is still a usual field within Geology, but the study of aerial photographs can't substitute the field investigations but rather it helps and contributes to them. The advantages of the study of the aerial photographs can be listed as follows:

a. it saves time

b. it provides to observe a larger area

c. it has more detailed ground surface than maps

d. photographs can be studied anytime and at anywhere

e. studies carried out on the photographs are cheaper than studies in the field

f. studies carried out on the aerial photographs are easier than studies in the field.

I attached a useful material for your better comprehension,

best wishes, Mario E. Sigismondi

Dear Dr. Mario E. Sigismondi

Wow very good, thank you very much.

A great class. Excellent summary of the topic.

Thank you very much.

Saludos cordiales!

Saudações!

My friend, I understand that you can read Spanish, I send a material that I hope will be useful for you. I have another book, "Manual de Fotogeología", a very very good book, by María Luisa López Vergara, but I need to scanned it to send to you. I will try.

Mario

In North America air photos are plentiful not just for geology, but for the location of houses in a community or cottages in remote places. In some instances, this is how they charge taxes on the square meters of your house (how big the house is). If you want to put solar panels on your roof, the solar company will tell you how much electricity you will produce from an air or satellite photo of your house.

In geology, a lot of information on rock types and structure can be obtained from air photos. In previously glaciated areas the orientation of the lakes will tell you which way the glacier moved in the area.

Very useful topic!

Follow answer

Thank You!

Study of physical structures of earth by interpreting photograph taken from a height (From satellite/aircraft).

PHOTOGEOLOGY (Lietrally: Photo: Photographs; Geology: Geos+Logos:Earth's Study): As the term indicates, its study of physical/geomorphological/topographical/geological features of Earth's surface by way of using Earth's photographs - to be relatively more confined to aerial photographs. Once common, these days lagging behind as the more informative satellite images are available, many a times through various free sources/ application softwares.

BELONGS TO GEOLOGY AND REMOTE SENSING: More towards the latter as in Photogeology, use of aerial photographs as stated above, is expected. These are the photographs taken from aircraft using certain procedure/traverse methods during aerial survey of a particular terrain. You may compare your studies through base/topographic maps, photogeological studies (using aerial photoraphs) and satellite imageries, to arrive at better observations and conclusion about the area/terrain your are studing using different resources.

MAIN REFERENCES: There are many, a few of them already uploaded by many learned people above.

IS IT STILL A USEFUL FIELD WITHIN GEOLOGY: I believe that if you are coming across aerial photographs, you would find them useful, as it would certainly through time-specific light and gives terrain specific information. In many academic/research institutions, they are available in old records and are fairly useful.

Best,

AK