Control of DGP development for the recent decades has been carried out by institutions below:
- "AGRM" and "EHGeoM" observe exogenous processes (landslides and ravines) on pilot sites and within settlements as well as they control the reservoir bank transformation.
- N.A. Dimo Institute of Soil Study researches the erosion of agricultural lands.
- Road exploitation services of Ministry of Transport and Roads controls landslides nearby roads and highways.
- Public Enterprise "Railways of Moldova" controls landslides nearby railways.
- Institution "Apele Moldovei" takes observations for irrigating and drying up territories underflood.
There should be differed several levels in a complex of regime observations within the territory of Moldova. In spatial attitude these are the regional (i.e. national), sub-regional (districts) observations and local and these are long- term and within-year observations in temporal attitude. In correspondence with end use supporting and specialized observation networks are set up. The first one is predestined for stable and systematic study of general regularities of DGP development within the territory of Moldova with full complex of observations carrying out by units of SAG "AGRM". The second one is set up if it is necessary by different institutions to observe the regime of DGP directly threatening to separate objects of national economy that managed by those institutions. In dependence on time the regime of DGP development can be long-term, within-year, within-season, daily etc.
The maps of zoning the territory on conditions and regime of DGP development are the engineering basement for supporting observation network allocation. The most important criteria for observation sites (study areas) choice are their engineering and geological conditions and activity of DGP development as well as practical value of those objects and production and economical expediency. When grounding the monitoring network allocation it is important to take into account three possible types of DGP activity:
- Development of existing geological objects that are under regime observation (individual forms of DGP);
- Rise of a new forms of the process within the same geological body, affected by given process. Objects of observation are the territories of prior spread of formations of definite stratigraphic complexes being the environment of the process development and;
- Forms of DGP development within geological bodies that are not the environment of the given process development but there this process is potentially possible. Objects of observation are the territories with the same regime of process-forming factors.
The supporting observation network is created on the basis of general supporting sites of three categories (in brackets the numbers of sites in correspondence with "EHGeoM" Inventory are given):
- The site of the 1st category is the territory of Moldova.
- The sites of the 2nd category: Ocnita ,Soroca (Hristici), Avrameni, Lazo (Chiscareni), Marcauti, Nisporeni, Baltata, Comrat, Larguta.
- The sites of the 3rd category:Soroca, Proscureni, BuiucaniiNoi, Nisporeni, Malaiesti, Marcauti, Baimaclia, Comrat.
Monitoring sites of the 1st category is carried out for engineering and geological regions in scale of 1:200 000 (the scale of basic cartographic material, i.e. graphics and mathematical models of exogenous geodynamic environment) and predestined for grounding of long-term (up to 50 years) regional predictions of DGP development and for choosing the principal ways of engineering protection of national economy objects and lands. The spatial engineering and geological basis for site model serves the map of solid zoning under conditions of development of DGP and their genetic complexes. Zoning is carried out by geomorphological and geological features: structural features of the territory and by types of rock sequence which can stipulate the DGP development. The analysis of basic quick changing factors (triggering factors), defining the activation of such or another DGP type or genetic association is completed by zoning the territory on DGP regime. Revealed temporal mechanism of regime of quick changing factors should be considered jointly with special features of taxons chosen before (when zoning the territory under conditions of DGP development) and the result is these mechanisms extrapolation to specified term.
The 1st category sites are characterized by the same geomorphological conditions and the same regime of basic quick changing factors (precipitation, temperature etc.) and expand engineering and geological region or its part. Periods of abnormal factors display within the sites of this category come simultaneously.
The 2nd category sites are within the sites of the 1st category and have special features in geological structure and expand engineering and geological region or its part the most affected to any geologic process. Engineering basement for spatial estimation of probability DGP occurrence are the maps of exogeodynamic potential and some another parameters. These maps are designed in scale 1:25 000 and 1:50 000. At artificial impact additional sites to research this impact on DGP development mechanism marked out.
The basic characteristics of 2nd category sites are the quantity of forms or phenomena and their types, sizes, rates of development and interconnections between processes and process-forming factors. There designed specialized engineering map for each site that show the basic types and the largest forms of DGP as well as their quantitative characteristics (extensity and intensity).
The 3rd category sites are within the sites of the 2nd category and used for monitoring separate genetic DGP types or their genetic complexes. For instance for landslide process this is a separate landslide formed on a slope with adjoining parts of divide surface and floodplain or it is a landslide developed on a ravine board which activation alternates with the process of ravine-forming. Engineering basement for this category of sites is a map of scale of 1:1 000 and 1:5 000 in dependence of dimensions of phenomena formed by DGP of any kind. Stationary sites are equipped with special instruments and sensors to carry out regular instrumental and semi-instrumental observations of local activity of a definite process and processes combination (ravine-forming and landslides; outwash, ravine-forming and cumulation; weathering). Methodology and instruments for regime observations are described in detail in literature.
Data obtained during DGP study must correspond to requirements below:
- To reflect quantitative well fixing indices of process activity with necessary accuracy and be the basis for time series of studying process;
- To be impressive for large areas, i.e. to characterize the process within the whole region;
- To give an idea about inter-annual spread of process activity with aim to reveal the dangerous seasons;
- To give objective characteristics of process development in time scale.