The purpose of this work is to reconstruct the coseismic displacement field caused by the 6th April (Mw 6.3) main shock from a dense network of survey-mode stations surrounding the epicentral area and to characterize the early postseismic
deformation field. In the months following the main shock, an extensive GPS survey was carried out on the existing Central Apennines Geodetic Network (CAGeoNet), with the intention of collecting a robust data set and to study the co- and postseismic
deformation field of this Apenninic normal faulting earthquake. - (NF)
The influence of local topography for wind direction on Mars : two examples of dune fields in crater basins
morphology and slip faces, the AA. conclude that the studied dune fields are influenced by topographically-controlled complex wind directions. Their morphological analysis reveals that inside Moreux Crater in particular, the topographic setting dominates
the wind flow direction, leading to the development of a sand transport pathway encircling the central peak of the crater. The dune fields in Herschel Crater are also affected by winds controlled by variable topography as suggested by the presence
of complex dunes and dune fields. This analysis indicate that the studied dune systems is not the result of paleo-wind regimes.
Using Place Names for Mapping the Distribution of Vanishing Historical Landscape Features: The Agras Field System in Northwest Spain
Field systems ; Galicia ; Land use ; Landscape dynamics ; Place names ; Rural landscape ; Spain ; Spatial distribution ; Thematic mapping ; cultural landscapes ; geographic information systems, Galicia ; place names ; spatio-temporal distribution
This paper explores the potential for using place names for the identification of historical landscape features characteristic of the agras field system in Northwest Spain. We first evaluated statistically the significance of a set of targeted place
terms and agras spatial distribution. Field names showed a strong inertia in time, remaining despite recent land use changes but also in a long-term context, as they indicate the former presence of agras in a coastal sector that disappeared around
Active learning ; Constructivism ; Field experiment ; Physical geography ; Simulation ; Teaching ; Teaching of geography ; Traditional learning
field trips have met with resistance, but there has been little research on the ways that virtual fieldwork could be improved. Animations in particular seem to engage students, although there is no evidence that they enhance the learning of physical
geography. The scholarship of teaching and learning physical geography offers challenges and opportunities for new and experienced faculty who have not previously published in this field.
A field experiment on the use of biogeotextiles for the conservation of sand-dunes of the Baltic coast in Lithuania
. There was a need to protect boundaries (walls) of the blowout from deflation and to encourage sand-dune accretion. The field experiment described in the paper was performed to establish vegetation on the ‘walls’ and base of the blowout to stabilize the feature
A field study was undertaken at the Greenwich Dunes, Price Edward Island, Canada. A conceptual model is proposed which shows how near-surface wind vectors are altered for 4 regional wind conditions : (a) onshore, detached; (b) onshore-oblique
equations driven by regional wind statistics would by unreliable and misleading. It is recommended that field studies routinely implement experimental designs that treat the near-surface wind field as comprising true vector quantities (with speed
and direction) in order that a more robust linkage between the regional (upper air) wind field and the sediment transport response across the beach-dune profile be established.
Assessing soil erosion in a terraced paddy field using experimental measurements and universal soil loss equation
On an experimental site in Hsinchu county, Northern Taiwan, a terraced rice field was used to investigate the soil erosion under the regular cultivation of rice in 2005, fallow in 2006, and planting with green manure in 2007. The results show
that infiltration rates significantly increase when a terraced paddy field is under fallow or is planted with green manure; the paddy is more vulnerable to embankment collapse and increased the rates of soil erosion. The comparison revealed that soil conservation
Quantitative study on influences of terraced field construction and check-dam siltation on soil erosion
To study the influences of terraced field construction and check-dam siltation on soil erosion of a watershed, the AA. built a simplified watershed model for the Loess Plateau hilly-gully region including terraced fields, slope farmlands, steep
with the increase in terraced field area percentage, while the soil erosion modulus below the edge of gully exhibited a linear decline along with the increase in siltation heigh.
Patterns of soil organic carbon and nitrogen in relation to soil movement under different land uses in mountain fields (South Central Pyrenees)
A set of cultivated and abandoned fields with different ages of land abandonment, slope gradients and lengths were selected in mountain farmland of the Central Spanish Pyrenees to conduct this study. In each of the fields, total soil depth sampling
. Under the land use practices in the studied fields the bottom slope positions accumulate soil particles and act as sinks of soil carbon and nitrogen in these mountain agricultural landscapes.
This progress report is the first of 3 overviews of important fields of study within contemporary glaciology, highlighting key developments in each field since 2005. The topics covered in this paper are : (1) the mass balance of glaciers and ice
this perspective. Interpretations farmers place on tidy features such as straight lines and evenly coloured fields are explored through a cross-cultural study between Germany and Scotland. Results show how farmers read agricultural landscapes for signs of skilled
farming, and how their interpretation is dependent on knowledge of the connection between efficient farming practices and the appearance of forms and colours in the fields.
The paper presents results of the field mapping of abandoned lands in the administrative district of the city of Kutná Hora in the Central Bohemia, including 7 cadastral territories stretching over on total area of 33 square kilometres. Field
Intermediate-field hydrogeological response induced by L’Aquila earthquake : the Acque Albule hydrothermal system (Central Italy)
The intermediate-field hydrological response to the 6th April 2009 L’Aquila earthquake has been studied using groundwater level data that were recorded by 6 piezometers in the Acque Albule Basin (Tivoli travertine quarry area) and in the Cornicolani
Field experiments constraining the probability distribution of particle travel distances duringnatural rainstorms on different slope gradients
The AA. seek to constrain the probability distribution of splash transport distances on natural hillslopes as a function of hillslope gradient and total precipitation depth. Field experiments were conducted under natural precipitation events
and were calibrated using SPOT satellite sensor imagery and limited field data concerning water levels. The application of the model highlighted flow characteristics of a large multi-channel network and also further indicated the field data that would
be required to properly characterize the flow field empirically : water surface slopes of the channels and in-channel hydraulic roughness coefficient.
Landslide susceptibility assessment in Limbe (SW Cameroon): A field calibrated seed cell and information value method
type, distance from roads, slope orientation, mean annual precipitation, soil type, land cover type, stream density and distance from stream. 63 small to very small translational and rotational landslide scars were identified through extensive field
Field-scale estimation of the volume percentage of rock fragments in stony soils by electrical resistivity
This paper presents a method that uses field spatial electrical resistivity measurements to determine the volume proportion of rock fragments. Based on the hypothesis that the electrical resistivity signal noise increases as the proportion of rock