Volume XX |

Combining geomorphological approach and thermal monitoring for permafrost research in Rodna Mountains, Northern Romanian Carpathians

Abstract: This paper aim to investigate the possibility of permafrost occurrence in the alpine area of Rodna Mountains by describing the rock glaciers distribution and characteristics and by monitoring the ground surface temperature and spring water temperature during late summer. Rock glaciers have a rather scarce distribution between 1670 and 1960 m a.s.l., their morphology is completely relict even at the highest altitudes which indicate they are inherited landforms. Thermal regime indicates improbable permafrost at Bila talus slope (1844 m a.s.l.) and an ambiguous outcome at Curmătura Buhăescului talus slope (1980 m a.s.l.) where average temperature during the BTS period was warmer than the -2°C threshold only in one year of the two monitored. Alpine spring water temperatures are above 3°C indicating absence of permafrost and they are moderately correlated with altitude. Iezeru Pietrosu cirque headwall is affected only by seasonal frost at 2100 m a.s.l. for almost 9 months. It seems that in Rodna Mountains the past and present climate conditions were and are milder in comparison to Southern Carpathians as the latitude increase does not compensate the lower altitudes.

Volume XI |

Morphometric features of the river network from the Bârlad catchment

Abstract: After a brief presentation of the Bârlad catchment, the hydrographic network is analyzed using the Horton-Strahler classification system. From the amount of morphometric parameters, the drainage and the slope patterns are taken into consideration for the entire Bârlad catchment and for the 13 hydrometric stations in the catchment that have data on water flows and suspended sediments. From those there were chosen the Vaslui hydrometric station as representative for the geomorphologic units of the Bârlad catchment and the Feldioara hydrometric station for the Berheci catchment. Based on the analyzed patterns there were determined a series of morphometric parameters specific to the river network for all the 13 analyzed stations and from their comparison one can see obvious differences between the obtained values for the basins in the Central Moldavian Plateau and the ones in the Tutovei Hills.

Volume IX |

The Dynamics of the Present Processes within the Sărăţel Catchment Area

Abstract: The Sărăţel catchment displays a territory mostly located in the molasse area of the Buzău Subcarpathians. The physical-geographical characteristics, as well as the social-human impact, created a complete geomorphologic system, in which the present geomorphologic processes register accentuated dynamics. Starting with the year 2002 until 2008 there were monitored areas with significant impact on the landscape, among the most important processes under study being the landslides, the torrents, the ravines and the creep.

Volume VIII |

Classification Systems for the Hydrographical Network

Abstract: The paper discusses the main systems of classification and codification starting from the mainstream to the smallest tributaries and the other way round, from the smallest tributaries to the mainstream systems. A new drainage basin coding system is developed based on the Horton-Strahler principles of classification. The new system is supposed to be useful both for scientific research and the management of water resources.