Abstract The extreme Mediterranean sea-level drop during the Messinian salinity crisis has been known for >50 years, but its amplitude and duration remain a challenge. Here we estimate by restoring topography of Nile canyon vertical position coastline unloading post-Messinian sediment accounting flexural isostasy compaction. We original depth geomorphological base level River at ~600 m below...

An iron enrichment experiment (Subarctic Ecosystem Response to Iron Enrichment Study), SERIES was carried out at Ocean Station Papa (50°N, 145°W) in the subarctic Northeast Pacific Ocean in July 2002, in order to observe the physiological, ecological and biogeochemical responses to a release from iron stress in these high-nitrate, low-chlorophyll (HNLC) waters. The patch was created by injectin...

A new distance-drawdown method for aquifers with anisotropy on the horizontal plane is presented. The method uses scalar transformation to convert to an equivalent, isotropic medium, thus permitting application of the Cooper-Jacob Method. The method is applicable to cases where at least one ellipse of equal drawdown can be delineated but can also be applied where no ellipse can be discerned fro...

Beijing is located on multiple alluvial-pluvial fans with thick Quaternary unconsolidated sediments. It has suffered serious groundwater drawdown and land subsidence due to groundwater exploitation. This study aimed to introduce geographical distribution measure methods into land subsidence research characterizing, geographically, land subsidence, groundwater drawdown, and compressible layer th...

Maximum Relative Drawdown measures the largest percentage drop of the price process on a given time interval. More recently, Maximum Relative Drawdown has become more popular as an alternative measure of risk. In contrast to the Value at Risk measure, it captures the path property of the price process. In this article, we propose a partial differential equation approach to determine the theoret...

An operational method to evaluate the environmental impacts associated with groundwater use is currently lacking in life cycle assessment (LCA). This paper outlines a method to calculate characterization factors that address the effects of groundwater extraction on the species richness of terrestrial vegetation. Characterization factors (CF) were derived for The Netherlands and consist of a fat...

A detailed record of benthic foraminifera carbon isotopes from the intermediate-depth South East Atlantic margin shows little glacial-interglacial variability between MIS-12 to MIS-10, suggesting that Northern Atlantic deepwaters consistently penetrated to at least 30 S. Millennialscale increases in either the mass or flux of northern-sourced deepwaters over the core site occurred alongside red...

The estimation of aquifer parameters, like transmissivity (T) and storativity (S), is vital for evaluating and managing groundwater resources. Hydrograph analysis and pumping tests are among the different methods available to estimate aquifer parameters, but pumping tests are the most commonly used. The study and data presented in this paper was conducted in the Chikaldhara Region (Amravati Dis...

Abstract. This paper reports on the methodology developed for a new hydraulic interpretation of flowmeter logs, allowing better characterization continental hydrological basins. In course log, different flow stretches are established, mostly corresponding to permeable layers (aquifers), among which there other mainly less (aquitards). such basins sufficient thickness, these may not have same he...