The paper presents two simulation modules –Virtual Dike and Flood Simulator– developed for flood Early Warning Systems (EWS). The UrbanFlood EWS is a distributed system that (1) analyzes sensor data received in real-time from flood defenses (dikes, dams, etc.) and (2) simulates dike stability, breaching and flood propagation. Computational modules are invoked by workflow-based expert scenarios ...

Figure 1. Relief map of island of Hawaii (after Moore et al., 1995) showing locations of dive sites (triangles, except dive 389, which is a square), locations of shield volcanoes (L—Loihi, K—Kilauea, ML— Mauna Loa, H—Hualalai, MK—Mauna Kea, Ko—Kohala), areas of recent Kilauea eruptions along south coast of Hawaii (u—Mauna Ulu, p—Puu Oo), rift zones of Mauna Loa (parallel lines), large, ca. 100 ...

Introduction: Lunar pyroclastic deposits can be subdivided into several modes of occurrence [1], suggesting different modes of emplacement. For example, some smaller pyroclastic deposits have been interpreted to have erupted during strombolian/hawaiian activity [2], while others are linked to vulcanian activity related to dike and sill emplacement below crater floors [3,4]. The largest pyroclas...

The depths and areas of the scour holes around spur dikes are most concerning issues regarding dike design. In this study, using a moving bed experiment, influence traditional rock-fill new permeable with different permeabilities on riverbed under unsteady flow was studied, spatial characteristics at heads were analyzed. results show that increases in permeability coefficient dike, depth area h...

In analogy with hydrothermal processes on Earth’s seafloor, Martian hydrothermal systems may provide a mechanism for transporting water, chemicals, and energy to the surface. We model magmatic dike driven hydrothermal systems in which we consider changes to the surrounding permeability resulting from the emplacement of the dike (Craft, 2010) and calculate water fluxes to the surface. When compa...

We examine the ascent of volatile-rich basaltic magma through a vertical dike that intersects a horizontal tunnel of comparable cross-sectional area to the dike and located 300m below the surface and initially lled with air at atmospheric pressure. This process is a simpli ed representation of some aspects of the possible interaction of a basaltic ssure eruption with a man-made tunnel, as part ...

Spur dikes are elongated structures extending from banks into rivers that mitigate erosion by forcing the flow away bank. The research on grouped spur is insufficient in comparison with those isolated dikes. Most of studies focus maximum scour depth, omitting bed morphological changes induced local processes. Moreover, as yet, there no established procedure for predicting depth around This stud...