Search
Search Results
-
Praktische Anwendung von Wärme als Tracer zur Abflussmessung in kleinen Oberflächengewässern
Thermal methods can be used for discharge measurements in open channels. Heat is used as tracer input in the flowing water either as a pulse or by...
-
Effects of structure and volcanic stratigraphy on groundwater and surface water flow: Hat Creek basin, California, USA
Hydrogeologic systems in the southern Cascade Range in California (USA) develop in volcanic rocks where morphology, stratigraphy, extensional...
-
Lava-ice interactions during historical eruptions of Veniaminof Volcano, Alaska and the potential for meltwater floods and lahars
Veniaminof Volcano on the Alaska Peninsula of southwest Alaska is one of a small group of ice-clad volcanoes globally that erupts lava flows in the...
-
Long-term stability of conduit dynamics at Fuego volcano, Guatemala, 2008–2015
Volcán de Fuego in Guatemala exhibited high systemic stability between 2008 and 2015 based on characteristic seismic events captured by temporary...
-
Spatter stability: constraining accumulation rates and temperature conditions with experimental bomb morphology
We have developed the first experimental methodology to create a volcanic spatter pile using molten basalt. This method permits reproduction of...
-
Diffuse CO2 Degassing and Thermal Energy Release from Poás Volcano, Costa Rica
During the period 2000–2003 four soil CO2 efflux surveys were carried out at Poás volcano (Costa Rica) to investigate the spatial distribution and...
-
Multiple-generation folding and non-coaxial strain of lava crusts
Viscoelastic strain in lava flows is commonly expressed as gravity-driven buckling of the lava crust. This surface folding process creates the...
-
High spatio-temporal resolution observations of crater lake temperatures at Kawah Ijen volcano, East Java, Indonesia
The crater lake of Kawah Ijen volcano, East Java, Indonesia, has displayed large and rapid changes in temperature at point locations during periods...
-
Small unmanned airborne systems to support oil and gas pipeline monitoring and map**
Oil and gas transmission pipelines require monitoring for maintenance and safety, to prevent equipment failure and accidents. Unmanned aerial...
-
Mass eruption rates in pulsating eruptions estimated from video analysis of the gas thrust-buoyancy transition—a case study of the 2010 eruption of Eyjafjallajökull, Iceland
The 2010 eruption of Eyjafjallajökull volcano was characterized by pulsating activity. Discrete ash bursts merged at higher altitude and formed a...
-
Remote-Sensing Technologies and Data Processing Algorithms
Remote sensing of the land covers, atmosphere and World Ocean aquatories is based on the registration of background or reflected and scattered...
-
Topographic and stochastic influences on pāhoehoe lava lobe emplacement
A detailed understanding of pāhoehoe emplacement is necessary for develo** accurate models of flow field development, assessing hazards, and...
-
Bombs behaving badly: unexpected trajectories and cooling of volcanic projectiles
We collected thermal infrared video of two explosive eruptions at Stromboli in June 2008 and manually traced the trajectories of 95 particles...
-
The GOFC-GOLD Fire Map** and Monitoring Theme: Assessment and Strategic Plans
The objectives of the fire map** and monitoring theme of the global observation of forest and landcover dynamics (GOFC-GOLD) program are to refine...
-
Systematic retrieval of ejecta velocities and gas fluxes at Etna volcano using L-Band Doppler radar
Strombolian-type volcanic activity is characterized by a series of gas bubbles bursting at the top of a magma column and leading to the ejection of...
-
Thermal characterization of the Vulcano fumarole field
Ground-based thermal infrared surveys can contribute to complete heat budget inventories for fumarole fields. However, variations in atmospheric...
-
Thermal structure and heat loss at the summit crater of an active lava dome
Forward-Looking Infrared (FLIR) nighttime thermal images were used to extract the thermal and morphological properties for the surface of a...
-
Strombolian explosive styles and source conditions: insights from thermal (FLIR) video
Forward Looking Infrared Radiometer (FLIR) cameras offer a unique view of explosive volcanism by providing an image of calibrated temperatures. In...
-
Crater Lake Temperature Changes of the 2005 Eruption of Santa Ana Volcano, El Salvador, Central America
A sudden eruption at Santa Ana occurred on 1 October 2005, producing an ash-and-gas plume to a height in excess of 10 km above the volcano. Several...
-
An empirical function to estimate the depths of linear hot sources: Laboratory modeling and field measurements of lava tubes
Estimating depths of buried lava tubes is important for determining the thermal budgets and effusion rates of basaltic volcanic systems. This...
