Remote sensing for resources development and environmental management: Remote sensing for resources development and environmental management

damen, m. c. j.

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Multivolume work

Persistent identifier:: 856342815

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A. A. Balkema

Identifier (digital):: 856342815

Language:: English

Additional Notes:: Volume 1-3 erschienen von 1986-1988

Editor:: Damen, M. C. J.

Document type:: Multivolume work

Volume

Persistent identifier:: 856641294

Title:: Remote sensing for resources development and environmental management

Sub title:: proceedings of the 7th international Symposium, Enschede, 25 - 29 August 1986

Scope:: IX Seiten, Seiten 551-956

Year of publication:: 1986

Place of publication:: Rotterdam; Boston

Publisher of the original:: A,. A. Balkema

Identifier (digital):: 856641294

Illustration:: Illustrationen, Diagramme

Signature of the source:: ZS 312(26,7,2)

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: Damen, M. C. J.

Editor:: International Society for Photogrammetry and Remote Sensing, Commission of Photographic and Remote Sensing Data

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: 5 Non-renewable resources: Geology, geomorphology and engineering projects. Chairman: J. V. Taranik, Liaison: B. N. Koopmans

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Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: A remote sensing methodological approach for applied geomorphology mapping in plain areas. Elíseo Popolizio, Carlos Canoba

Document type:: Multivolume work

Structure type:: Chapter

662 a classification elaborated. The classification Hows a systematic study reordering the existent terminology, moreover the conceptual content of each term was reformulated according to its dynamic. (Po- polizio 1973a) Linear symbols and letters were used for the carto graphy. It could be pointed out that the transfluence from one basin to the other is particularly indicated, since it is a frequent phenomena in Argentine plains and very important from the applied geomorphology point of view. This work made the photointerpreter task and its corresponding cartography easier. At the same time and considering that different types of surface run-off frequently tend to reach an ordered spatial association, though not so well defin- ned. as in., the major..amplitude relief,surface runoff network must be specially taken into account (Popoli- zio 1973b) Fourteen elemental network models were defined and also characterized^into .integrated or desintegráted,- whether they are divergent or convergent. After these models we can pass to more complex patterns. The last ones are the most frequent all the more as larger the analyzed network is and climatic, edaphic, vegetation- al, geological,or geomorphological variance of the a area where it is developed. The advantage of consi dering elementary models, consists in that any varian ce from one towards the other, indicates certain con ditioning by any of the above mentioned factors, with out leaving aside such a widespread influence as the anthropic. Evidently these model changes can require an adequate observation scale and so it is not advi sable to manage only one. Using a matrix in which diagonal appears pure ele ments, possible models have been indicated and supposed elements combinations in twoes, the composed network. By means of an adequate descriptive formula the type of network is defined, which allows also to indicate the existence of two models interjoined in a sole net/ a paleonet presence and the sequential trend towards a determined net. In this way dynamic aspects can be established to the use of formulas that have been incorporated to the legend. (Popolizio 1973b). On these fundamental elements, connect to the co rrect interpretation of plains geomorphological cha racteristics, the thematic cartography elaboration was carried on. For a geomorphological map at semidetailed level, scale 1:50.000 (La Escondida) an areal symbology was designed for corresponding mapping units. They belong to forms of structural origin, forms of fluvial ori gin, paleoforms of eolic origin and corresponding symbology to morphometry, transport and urban infra estructuras, also. It should be pointed out that lithology is not included in these maps, appart from corresponding printing difficulties. From one hand the relative homogeneity of quaternary sediments must be consider ed and moreover, if its variation has an important geomorphologic value, it is indicated on legend. Due to originated importance or vegetation influence to define geomorphic units, the same as from the applied point of view, phytogeographic chart at equal scale is elaborated at a physognomy level. Corresponding limits are determined and accompaning letters are shown and defined in the legend. Geomor phologic maps at scale 1:250.000 were also elaborated where structural elements are indicated (lineaments) and the units of second order limit, as well as the corresponding subunits of third and fourth order. They were accompanied by numerical symbols related to decimal classification system, which were express ed in the legend by unit definition and its corres ponding vegetal association- On the same areas and at equal scale synthesis maps about surface runoff dynamic were elaborated. There, basins, river courses and its features, transfluence, headwater retreat, etc. were defined. In every basin identified by a letter the surface run-off system is'describéd'iñ the' legend. From the applied geomorphology’point'of view and the water resources management, this thematic map is essential and very useful. On the pampean plain sector which corresponds to the south of Santa Fe Province and its adjacent zone belonging Paraná river valley and its delta, a geomorphological mapping at small scale 1:1.000.000 was performed on the base of Landsat imagery. On these areas members of the Instituto de Fisio grafía y Geología have carried on previous studies along two decades and more, using aerophotographies and topographic maps at different scales and includ ing field works. Structural lineaments are indicated in cartography to which the limits of second order units are asso ciated and third order subunit are considered as forms of structural origin, hydrographic networks of major hierarchy and lakes were included using conventional symbol. On the base of detectable elements on Landsat imagery; fourth order subunits were detected and indicated separately using conventional symbology also (Canoba 1982) The geomorphological mapping at 1: 1.000.000 scale of one adjacent sector of Parana river delta was a very valuable experience where the ITC system for geomorphological surveys were used. Geomorphological units and subunits determinations could be used due to the fact that geoforms can be perceived in the small scales images thus allowing its interpretation. This occurs for the reason that Parana river Delta has an unusual dimension compared to those correspond ing to other deltas in the world. It should be pointed out that previous studies of some of these areas with terrain classification pur pose on the bases of their geomorphological characte ristics were performed at 1:100.000 scale. Geomorpho logical surveys at 1:20.000 scale was carried on in key sectors. (Pasotti et al 1976). Aerophotography and cartography at different scales utilization and particularly Landsat images from different periods of the hydrologic year, allows the improvement of some aspects of fluvial dynamics inter pretation. CONCLUSIONS As conclusion of our experience about geomorphologi cal studies on Argentine plains, using remote sen- single realize that frequently the same method co rresponding to the zonal level is used (been the one where the most of the experiences were carried on). Nevertheless it is considered that it should not be so and is very particularly reiterated for plains studies. Each survey level implies a corresponding perception level and a particular methodological adjustment (Table 1). We can also define three types of photointerpreta tion (image interpretation according to the above mentioned levels: (the generalist, the integrator and the especialist). Even when they are complemen tary, each of them has a great importance either from the interpretation point of view or from applied geomorphology. The regional level surveys are used for the sake of taking decisions, those of zonal levels are for planning and those of local level are for specific projects or works. That is why synthesis stated on Table 1 is presented as a contribution, being supported by our experiences and the expressed concepts. So we can consider it as a useful base for work performance as much as for photointerpreters formation. REFERENCES Canoba, C. 1982. Geomorphological mapping using Land sat imagery: a case study in Argentina. ITC Jour. 1982-3, p.324-329. Enschede. Canoba, C. & Popolizio, E. 1968. Estudio aerofotográ- fico de paleopotamología en un sector ribereño del rlo Paraná-Chaco. Inst.Fis.y Geol. Notas №2 UNR *

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