ANTARCTIC SUBGLACIAL AND SUBMARINE RELIEF: GEOMORPHOLOGICAL MAPPING OF PRE-GLACIAL RIVER VALLEYS

Bedgap: where next for Antarctic subglacial mapping?

The recently published Bedmap2 datasets mark the culmination of several decades of subice and subocean Antarctic topographic surveying by many nations, but maps of the topographic data distribution show that in the global context, the Antarctic bed remains very poorly sampled. Most of the remaining large unmapped areas on Earth lie under Antarctic ice and polar surveying continues to be difficu...

Presenting a Geomorphological Conceptual Model of Construction of bridges in urban floodway- river valleys

 Geomorphology is related to the shapes and processes of the earthchr('39')s surface, and any human activity, including planning, that changes the shape of the earth and can cause quantitative and qualitative changes in the movement and movement of materials and kinetic energy and affect the geomorphic system. The attention and involvement of geomorphologists are included. Geomorphology, as a s...

The influence of Antarctic subglacial volcanism on the global iron cycle during the Last Glacial Maximum

Marine sediment records suggest that episodes of major atmospheric CO2 drawdown during the last glacial period were linked to iron (Fe) fertilization of subantarctic surface waters. The principal source of this Fe is thought to be dust transported from southern mid-latitude deserts. However, uncertainty exists over contributions to CO2 sequestration from complementary Fe sources, such as the An...

Glacial Outwash Terraces of the Hocking and Scioto River Valleys, Ohio

Ecologically-based Management Factors and criteria of River-Valleys in Tehran metropolis-Case Study: River-Valleys of Kan

Iran has seasonal rivers because of dry climate, low rainfall and different topography. These river- valleys have main role in forming, genesis, and sustainability of human settlements and provide different ecological services. The main services include beauty, store of green spaces, water supply, reduce and create temperature differences, local air flow and natural ventilation which are part o...