The comparative geomorphologic analysis of the passive (Arctic) and active (Pacific) continental margins of Asia was performed. Morphostructure and evolution of both types of margins are characterized. An approach to classification of continent-ocean transition zones is described.

A particular impact type of morpholithogenesis is described. It includes not only well-known falls of meteorites, but also the effects of snow avalanche, landslides and collapses. Classification of processes and forms and their forming mechanisms are discussed.

Morphometry is rising today a new higher level due to theoretical understanding its subject and method. The theory is based on considering the landforms as' its object, as well as their distinction, boundary's character, types of points, lines and surfaces which make up structural invariants, the manifestation of the latter in the land surface. In the development of morphometry the cartographic sign systems play the large role, as well as morphometrical mapping techniques of which isolineal pictures are the most convenient. In prospect morphometry and cartometry will become the nucleus of many interconnected metric disciplines such as photogrammetry, photometry, dynamic cartometry, hologrammetry etc. The "Morphometrical analysis of landforms" by Yu. Simonov is analyzed in connection with these problems.

In discussion of controversial paper by A.M. Berlyant presented in this issue, a question is made of the efficiency of isolineal mapping in the landforms morphometry.

Accurate measurements of the neotectonic deformations with horizontal component may be carried out on East-European platform by geomorphological method. The latter is based on comparison of neotectonic landforms and structural-geomorphological paragenetic consequences of tectonically active regions. The conformity of neotectonic landforms and elements of geological structure is the main criterion.

The principle of distinction, classification and mapping of elementary morphologic facies of mountain slopes is founded using the Southern Sikhote-Alin as an example. The classification is based on morphological parameters, mainly the degree of the slopes. Elementary slopes of certain degree and with certain actual process are considered as geomorphologic faces. Eventually by the large-scale mapping the system of elementary territorial units may be revealed. These units differ from each other by their gradient, morphodynamics and genesis.

The main regularities of the recent morphogenesis in the deglaciation area of the ancient glaciation were identified. The Accol valley was particularly studied by geomorphological methods, including mapping of large scale, field observations, interpretation of aerial pictures. The predominant postglacial relief-forming processes depend on the altitudinal climatic zonality, inclination and azimuth of the slope. Erosion and slope processes followed privation and expiration during the deglaciation period. When glacier as an active transport agent disappeared, glacial valleys became the area of accumulation.

Cartometry of 14 shorelands regions showed the main regularities of submarine slope depths. In the presence of drifting silt loads and lack of their supply from the land, depth distribution is fitted by logarithmic function. This corresponds to the mode functions of wave height distribution and of orbital wave velocities. Relaxation of some coastal systems in response to changes of supply takes from several years to hundreds of years.

Morphometric investigations of the Kursk district territory showed the influence of valley-balka network density on the gully development, wood lots distribution, location and areas of field-protecting and erosion control forestation.

Geomorphology of the apical belt of mountains in the southwestern Near-Baikal region is considered. Regularities of its formation are shown up in a connection with oroclimatic features of the region. An attempt to extrapolate the peculiarities of upper layer of mountain relief to the other sections of the Baikal rift zone has been made.

Three remarkable ideas and their destiny (to the 90-th anniversary of N.A. Florensov)

Aleksey Petrovitch Dedkov (to the 75-th anniversary)

Dmitry Andreyevitch Timofeyev (to the 70-th anniversary)

A new book on gully erosion

Plenary session on the problem of erosional, channel and river mouth processes

Maria Samoilovna Kaletskaya (1906-1998)

Bulgarian geomorphologist V.I. Popov