The Geographical Unconscious          下载免费PDF全文

Veronica Della Dora 《Geographical review》2015,105(2):251-255

  相似文献   

Multirate time integration for coupled saturated/unsaturated porous medium and free flow systems     

Iryna Rybak  Jim Magiera  Rainer Helmig  Christian Rohde 《Computational Geosciences》2015,19(2):299-309

  相似文献   

Estimating aquifer recharge in fractured hard rock: analysis of the methodological challenges and application to obtain a water balance (Jaisamand Lake Basin,India)   总被引：1，自引：0，他引：1  

Melissa M. Rohde  W. Mike Edmunds  David Freyberg  Om Prakash Sharma  Anupma Sharma 《Hydrogeology Journal》2015,23(7):1573-1586

  相似文献   

Distribution and seasonal variation of concentrations of particulate carbohydrates and uronic acids in the northern Indian Ocean   总被引：3，自引：0，他引：3  

Vishwas B. Khodse  Loreta Fernandes  V.V. Gopalkrishna  Narayan B. Bhosle  Veronica Fernandes  S.G. Prabhu Matondkar  Ravi Bhushan 《Marine Chemistry》2007,103(3-4):327-346

Suspended particulate matter (SPM) samples were collected from the surface seawaters at 31 stations, and from various depths (2 to 1000 m) at 9 locations in the northern Indian Ocean during various seasons. SPM samples were analyzed for total particulate carbohydrate (TPCHO), total particulate uronic acid (TPURA) and total particulate neutral carbohydrate (TPNCHO) concentrations and composition. Strong spatial, temporal and depth related variations were evident in the distribution of these compounds. In surface waters, concentrations of TPCHO, TPNCHO, and TPURA varied from 0.57 to 3.58 μM C, 0.11 to 2.34 μM C, and from 0.01 to 0.31 μM C, respectively, and accounted for 2.6 to 34.6%, 2 to 24.5%, and 0.2 to 6.3% of POC, respectively, whereas the TPURA accounted for 4.7 to 22.7% of TPCHO. Concentrations and yields of both TPNCHO and TPURA decreased rapidly in the upper 100 m of the water column suggesting their utilization by heterotrophic organisms. Glucose was the most abundant constituent of the TPNCHO. Glucose mole fraction decreased while that of other monosaccharides, especially galactose, arabinose, mannose, rhamnose and fucose increased in the upper 100 m water. Below this depth, mole fraction of glucose increased while that of other sugars decreased with the increasing water depth. Generally, high C:N ratios were associated with low yields of carbohydrates and uronic acids. Inverse correlation between the mole fractions of arabinose plus xylose and rhamnose plus fucose indicates the importance of biogenic and terrestrial organic matter input to the Bay of Bengal. TPURA are surface-active in nature and thus may play an important role in coagulation of particles and macromolecules. The observed spatial and seasonal variations of these compounds may be due to differences in phytoplankton biomass, nutrient status, and the influence of terrestrial material.  相似文献   

GEOGRAPHIES OF MARS: Seeing and Knowing the Red Planet. By K. Maria D. Lane     

Veronica Della Dora 《Geographical review》2012,102(3):390-392

  相似文献   

Assessing the additive risks of PSII herbicide exposure to the Great Barrier Reef     

Lewis SE  Schaffelke B  Shaw M  Bainbridge ZT  Rohde KW  Kennedy K  Davis AM  Masters BL  Devlin MJ  Mueller JF  Brodie JE 《Marine pollution bulletin》2012,65(4-9):280-291

Herbicide residues have been measured in the Great Barrier Reef lagoon at concentrations which have the potential to harm marine plant communities. Monitoring on the Great Barrier Reef lagoon following wet season discharge show that 80% of the time when herbicides are detected, more than one are present. These herbicides have been shown to act in an additive manner with regards to photosystem-II inhibition. In this study, the area of the Great Barrier Reef considered to be at risk from herbicides is compared when exposures are considered for each herbicide individually and also for herbicide mixtures. Two normalisation indices for herbicide mixtures were calculated based on current guidelines and PSII inhibition thresholds. The results show that the area of risk for most regions is greatly increased under the proposed additive PSII inhibition threshold and that the resilience of this important ecosystem could be reduced by exposure to these herbicides.  相似文献   

Debris flow hazard assessment by means of numerical simulations: implications for the Rotolon creek valley (Northern Italy)     

Teresa Salvatici  Stefano Morelli  Veronica Pazzi  William Frodella  Riccardo Fanti 《山地科学学报》2017,14(4):636-648

On 4^th November 2010, a debris flow detached from a large debris cover accumulated above the lowermost portion of the Rotolon landslide (Vicentine Pre-Alps, NE Italy) and channelized in the valley below within the Rotolon Creek riverbed. Such event evolved into a highly mobile and sudden debris flow, damaging some hydraulic works and putting at high risk four villages located along the creek banks. A monitoring campaign was carried out by means of a ground based radar interferometer (GB-InSAR) to evaluate any residual displacement risk in the affected area and in the undisturbed neighbouring materials. Moreover, starting from the current slope condition, a landslide runout numerical modelling was performed by means of DAN-3D code to assess the impacted areas, flow velocity, and deposit distribution of the simulated events. The rheological parameters necessary for an accurate modelling were obtained through the back analysis of the 2010 debris flow event. Back analysis was calibrated with all of the available terrain data coming from field surveys and ancillary documents, such as topographic, geomorphological and geological maps, with pre- and post-event LiDAR derived DTMs, and with orthophotos. Finally, to identify new possible future debris flow source areas as input data for the new modelling, all the obtained terrain data were reanalysed and integrated with the GB-InSAR displacement maps; consequently, new simulations were made to forecast future events. The results show that the integration of the selected modelling technique with ancillary data and radar displacement maps can be a very useful tool for managing problems related to debris flow events in the examined area.  相似文献   

Changes in sea level in the German Bight     

H. Rohde 《Geophysical Journal International》1980,62(2):291-302

Summary. Tidal data recorded in the German Bight over the last 200 yr show that MHW (mean high water) has risen by about 20 to 30 cm per century. Corresponding data on maximum flood levels over the last 400 yr show a similar increase of approximately 25 cm per century. At Cuxhaven, the graph of maximum annual water levels drawn from 150 yr of continuous recordings reveals a long term oscillation superimposed on the progressive linear increase in water levels. This oscillation has a period of roughly 80 yr and extrapolation suggests the next peak should occur around 1985.
These rates of increase in sea level over recent centuries are compared against the perspective of much longer term trends.  相似文献   

Auroral implications of recent measurements on O(1S) and O(1S) formation in the reaction of N+ with O2     

Andrew O. Langford  Veronica M. Bierbaum  Stephen R. Leone 《Planetary and Space Science》1985,33(10):1225-1228

Recent flowing afterglow measurements have shown that the reaction of N⁺ with O₂ produces 70 ± 30% of the oxygen atom product as $\text{O}\text{(}{}^1\text{D}\text{)}$ and < 0.1% as $\text{O}\text{(}{}^1\text{S}\text{)}$. These results indicate that this reaction does not contribute to the auroral green line emission (5577 Å), but can account for ～10% of the observed red line (6300 Å) auroral emission.  相似文献   

Progress in Providing Safe Drinking Water     

Charlene E. Shaw  Veronica Blette 《Ground Water Monitoring & Remediation》2005,25(3):46-50

  相似文献