научный журнал по геологии Геоморфология ISSN: 0435-4281

2012

МООРА Т.Х., РАУКАС А.В. — 2012 г.

Kaali meteorite craters are located on the Island of Saaremaa, 18 km northeast of its chief town Kuressaare, being the fi rst established meteorite craters in Europe. Nine meteorite craters formed about 7500 years BP as a result of single iron meteorite falling apart, which was a typical coarse octahedrite with Fe/Ni ratio being equal to 91.5/8.3. Craters are spread within a wildlife reserve of the total area about 50 ha. Craters were formed in a twolayered target rock: till and dolomite. The diameter of the main crater is 105-110 m.

ЧАЛОВ Р.С. — 2012 г.

Different approaches to evaluation of river bed stability are analyzed. It is shown that indexes like Lokhtin number, coeffi cient of riverbed stability by N.I. Makkaveev, and their modifi cations allow to reveal general features of riverbed formation and to characterize in generalized form the gradation of bed deformations and hazardous processes. Hydromorphometric relations are indicative of cross-section shape and depend on riverbed stability, but can not be used as its index; they are applied in hydrotechnical engineering calculations.

БАРЫШНИКОВ Н.Б., ПОТАШКО Е.А., СКОМОРОХОВА Е.М., СОБОЛЕВ М.В. — 2012 г.

Morphometric characteristics of the fl ood-plain are not integral variables and cannot adequately refl ect the features of the fl ood-plain morphological structure. We used the angle between the geometric axes of channel and fl ood-plain as a measure of the angle between the dynamic axes of the channel and fl ood-plain fl ows. It gives the possibility of calculating the hydraulic characteristics of the channel and the fl ood-plain fl ows. However this morphometric parameter cant characterize thoroughly the features of the morphological structure of the fl oodplains. Therefore further research is needed to develop new parameters, which would characterize the morphology of the fl ood-plains not only in transverse sections but also in longitudinal ranges.

ЛУНЁВ П.И., ПОПОВ С.В. — 2012 г.

On the base of topographic maps of 1 : 500 000 scale the regionalization of the territory was fulfi lled. Three geomorphic regions were distinguished: 1 - the Vostok trench - submarine hilly plain of abs. height -900 m, with several depressions and rises; 2 - the Komsomolski mountains with abs. height up to 1580 m; 3 - the Shmidt plain with abs. height about 300 m and relief about 100 m. These regions are complexifi ed by exogenic mesolandforms with different heights, depth of dissection and total morphology.

БУЛАНОВ С.А., КЛАДОВЩИКОВА М.Е., ЧИЧАГОВ В.П. — 2012 г.

БЕЛЯЕВ В.Р., ГОЛОСОВ В.Н., МАРКЕЛОВ М.В., ШАМШУРИНА Е.Р. — 2012 г.

The paper discusses results of quantitative assessment of sediment redistribution within a small arable catchment during a few different time intervals. Application of several independent methods allowed more reliable determination of individual components of the local sediment budget. The results show that during approximately 130 years of traditional cultivation about 90% of sediment from eroded arable slopes reached the small valley bottom. After introduction of soil conservation measures this value decreased to less than 20%. At the same time, average annual soil loss rate for the entire catchment have decreased by more than 2 times - from 13.9-14.4 t/ ha ?? year to 7.0 t/ha ?? year.

КОСЬЯН Р.Д., КРЫЛЕНКО В.В., КРЫЛЕНКО М.В. — 2012 г.

Comparison of the field data and published materials has shown that the Anapa bay-bar structure has not changed essentially, three zones are still traced: the beach, the zone of dunes and the zone of hilly sands. As a result of water line recession (its speed reached 1.2 m per year) the reduction of total width of the beach and dune belt occurred. This reduction happened basically due to the destruction of dune belt sea edge, the width of the beach has remained practically constant. Considering the reduction of total amount of the sediments composing the beach and the dunes zone, Anapa bay-bar on the whole may be at present counted for the degrading accumulative form.

ВИНОГРАДОВА О.В. — 2012 г.

Incipient river-net in the mountain regions of Asian Russia arose in different geological epochs according to periods of main geologic structures formation. Main valleys and low order tributaries appeared simultaneously. During several erosion cycles, river-net possessed inherent character or underwent signifi cant changes. Rearrangements of basins were caused by volcanic activity, intrusions and other structural-tectonic changes. Intrabasin alterations depend on structural-tectonic and climatic factors combinations.

ЛОПАТИН Д.В., ШАВЕЛЬ Н.И. — 2012 г.

Structural-geomorphologic indicators of the covered stocks in poorly exposed areas are very important for rare-metal ore-bearing stocks prospecting. Orlovsko-Spokoinenski ore fi eld in the northern sector of the outer zone of the Aginskaya Late Mesozoic macro structural form with a central-type symmetry was taken as a test site. At the fi rst stage investigation of exogenic processes was fulfi lled. Creep, sheet wash and linear erosion are the main processes in the area, especially intense during heavy rains. Frost processes like solifl uction and congelifl uction are of some importance too.

2012

ЛЕБЕДЕВА Е.В. — 2012 г.

Three main causes of river network alterations are described. 1. External impacts or complex of several impacts on drainage basin. These impacts may be caused by tectonic movements, volcanism, climatic changes, oscillations of end basin level and abrasive activity related to transgression. Their results may be whether broad and cover a series of neighbour basins, or local one. 2. Interaction of adjacent drainage basins with different velocity of inner processes. 3. The change of relief type within drainage basin (for instance from mountain into plain one) followed by alteration of types and velocities of major relief formation processes.

ФИЛИППОВ О.В. — 2012 г.

Long-term observations (1958-2010) of the Volgograd reservoir banks washout proved the linear trends of process, which evidence the lasting character of washout. In the course of abrasion-accumulation profi le development the coeffi cient of accumulation keep minimal values, that extends the active phase of bank washout. Characteristics of bank profi les depend mainly on currents.

ЕВЗЕРОВ В.Я. — 2012 г.

Continental ice had blocked the sea spreading into land till the end of the Allerod. Transgression began to the Murman coast in the Bolling after deglaciation of south-east part of the Barents Sea shelf. The farthest spread of the sea into Murman coast and in the White Sea Basin took place in the end of the Allerod after deglaciation of the coasts and the White Sea depression. Then, regression took place on the most part of the coasts. The following transgression spanned the previously glaciated area and its vicinity in the Youger Dryas. The subsequent regression began at the end of the Youger Dryas. The third transgression (Tapes) took place in the Holocene.

ЛЕОНТЬЕВ И.О. — 2012 г.

Mechanisms forming a coastal profi le both in wave shoals and the surf zones are analyzed. It is shown that the whole active profi le can be approximated by two concave curves crossing at wave-breaking zone. The model is developed to predict the profi le deformations due to seasonal variations or cycles associated with the storm events. It is adopted that in case of balanced sediment budget the cross-section area of the active profi le remains constant. Using this condition and the profi le equations obtained one can predict the changes in a profi le length and determine a coastline displacement. Model verifi cation has been fulfi lled on the basis of published fi eld data.

УФИМЦЕВ Г.Ф. — 2012 г.

ЖИНДАРЕВ Л.А., МАРУСИН К.В., СВИРИДОВА Е.А., ФЁДОРОВА Е.А., ХАБИДОВ А.Ш. — 2012 г.

In the large reservoirs the classical development of shores under the impact of wave action and water level fl uctuations results in washout during the water level rise and in the movement of coastline toward water storage during fall in water level. In the case of non-classical development water level rise results in the submergence of coastal areas and accumulation, while the fall in the water level results in the cutting of the dereliction, slackening of the beach drift and subsequent cutting of the adjacent shores. Both types of development take place on the shores of both large reservoirs and seas. Considering geomorphological similarity of the seas and the storage lakes coasts, large reservoirs may serve as models for studying and forecasting seashore response to water level fl uctuations.

РОМАНЕНКО Ф.А. — 2012 г.

Один из самых дискуссионных вопросов, возникающих при исследовании берегов арктических морей, - высота, возраст и распространение голоценовой (фландрской) трансгрессии. Сравнительно быстрое повышение уровня океана в период с 18-17 до 6-5 тыс. лет более чем на 100 м (>1 м/100 лет) сопровождалось интенсивным затоп- лением прибрежной суши. Оно имело свои особенности в различных регионах, и де- лать выводы о колебаниях уровня океана можно лишь применительно к конкретно- му участку побережья [1, с. 42-43]. Установление этих различий, выявление следов голоценовой трансгрессии и ее влияния на рельеф прибрежной суши - главная цель наших исследований 2000-2011 гг. на побережьях Карского и Восточно-Сибирского морей.

КАЗЬМИН С.П. — 2012 г.

Basing on the analysis of the relief structure and relief-forming deposits, fi ve geologic-geomorphologic regions were distinguished within Surgut region. Each of these regions has certain peculiarities of structure, origin and age which are refl ected in the structure of the corresponding landscape.

КОРОТАЕВ В.Н. — 2012 г.

The sedimentary models of principal morphogenetic types of the mouth systems - bay-head, lagoon-head and protruding deltas were developed on the basis of river deltas geological features analysis. Each model possesses an original logic of lithodynamic processes: 1) the lagoon-deltaic systems are natural traps for river load; 2) the estuarine-deltaic systems are characterized by poor accumulation of river load and absence of the subaerial deltas; river load is carried out from estuarine and accumulated on open offshore as huge submarine cones (mouth bars); 3) the liman-deltaic systems are characterized by accumulation of about 50% of river load in subaerial deltas; the transit part of river load is carried out by channel fl ows behind avandelta; 4) the deltaic systems on open coastland accumulate about 85% of river load; their transit part contributes to the formation of barrier bars.