Quantifying periglacial erosion: insights on a glacial sediment budget, Matanuska Glacier, Alaska

2009 ◽  
Vol 34 (15) ◽  
pp. 2008-2022 ◽  
Author(s):  
Colin R. O'Farrell ◽  
Arjun M. Heimsath ◽  
Daniel E. Lawson ◽  
Laura M. Jorgensen ◽  
Edward B. Evenson ◽  
...  
Keyword(s):  
Sediment Budget ◽  
Glacial Sediment ◽  
Matanuska Glacier

A 3D hydrogeochemistry model of nitrate transport and fate in a glacial sediment catchment: A first step toward a numerical model

2021 ◽  
Vol 776 ◽  
pp. 146041
Author(s):  
Hyojin Kim ◽  
Peter B.E. Sandersen ◽  
Rasmus Jakobsen ◽  
Anders Juhl Kallesøe ◽  
Niels Claes ◽  
...  
Keyword(s):  
Numerical Model ◽  
Nitrate Transport ◽  
Glacial Sediment

An intelligent algorithm for autonomous scientific sampling with the VALKYRIE cryobot

2017 ◽  
Vol 17 (3) ◽  
pp. 247-257 ◽  
Author(s):  
Evan B. Clark ◽  
Nathan E. Bramall ◽  
Brent Christner ◽  
Chris Flesher ◽  
John Harman ◽  
...  
Keyword(s):  
Human Performance ◽  
Autonomous Underwater Vehicles ◽  
Field Performance ◽  
Planetary Science ◽  
Operating Environment ◽  
Intelligent Algorithm ◽  
Future State ◽  
Science Operations ◽  
Wide Range ◽  
Matanuska Glacier

AbstractThe development of algorithms for agile science and autonomous exploration has been pursued in contexts ranging from spacecraft to planetary rovers to unmanned aerial vehicles to autonomous underwater vehicles. In situations where time, mission resources and communications are limited and the future state of the operating environment is unknown, the capability of a vehicle to dynamically respond to changing circumstances without human guidance can substantially improve science return. Such capabilities are difficult to achieve in practice, however, because they require intelligent reasoning to utilize limited resources in an inherently uncertain environment. Here we discuss the development, characterization and field performance of two algorithms for autonomously collecting water samples on VALKYRIE (Very deep Autonomous Laser-powered Kilowatt-class Yo-yoing Robotic Ice Explorer), a glacier-penetrating cryobot deployed to the Matanuska Glacier, Alaska (Mission Control location: 61°42′09.3″N 147°37′23.2″W). We show performance on par with human performance across a wide range of mission morphologies using simulated mission data, and demonstrate the effectiveness of the algorithms at autonomously collecting samples with high relative cell concentration during field operation. The development of such algorithms will help enable autonomous science operations in environments where constant real-time human supervision is impractical, such as penetration of ice sheets on Earth and high-priority planetary science targets like Europa.

scholarly journals Neotectonic evolution and sediment budget of the Meuse catchment in the Ardennes and the Roer Valley Rift System

2002 ◽  
Vol 81 (2) ◽  
pp. 211-215 ◽  
Author(s):  
R.T. Van Balen ◽  
R.F. Houtgast ◽  
F.M. Van der Wateren ◽  
J. Vandenberghe
Keyword(s):  
Digital Terrain Model ◽  
River System ◽  
Sediment Budget ◽  
Middle Pleistocene ◽  
Rift System ◽  
Terrain Model ◽  
Fluvial Terraces ◽  
Digital Terrain ◽  
History Of ◽  
Planation Surfaces

AbstractUsing marine planation surfaces, fluvial terraces and a digital terrain model, the amount of eroded rock volume versus time for the Meuse catchment has been computed. A comparison of the amount of eroded volume with the volume of sediment preserved in the Roer Valley Rift System shows that 12% of the eroded volume is trapped in this rift. The neotectonic uplift evolution of the Ardennes is inferred from the incision history of the Meuse River system and compared to the subsidence characteristics of the Roer Valley Rift System. Both areas are characterized by an early Middle Pleistocene uplift event.

Gulf of Mexico Regional Sediment Budget

2012 ◽  
Vol 60 ◽  
pp. 14-29 ◽  
Author(s):  
Andrew Morang ◽  
Jeffrey P. Waters ◽  
Syed M. Khalil
Keyword(s):  
Gulf Of Mexico ◽  
Sediment Budget

A review of the suspended sediment budget at the confluence of the Paraná and Paraguay Rivers

2009 ◽  
Vol 23 (22) ◽  
pp. 3230-3235 ◽  
Author(s):  
Mario L. Amsler ◽  
Edmundo C. Drago
Keyword(s):  
Suspended Sediment ◽  
Sediment Budget

scholarly journals Dynamics of soil erosion rates and controlling factors in the Northern Ethiopian Highlands – towards a sediment budget

2008 ◽  
Vol 33 (5) ◽  
pp. 695-711 ◽  
Author(s):  
Jan Nyssen ◽  
Jean Poesen ◽  
Jan Moeyersons ◽  
Mitiku Haile ◽  
Jozef Deckers
Keyword(s):  
Soil Erosion ◽  
Sediment Budget ◽  
Controlling Factors ◽  
Ethiopian Highlands ◽  
Erosion Rates ◽  
Soil Erosion Rates
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