Dr. Carsten Schwarz Geological Survey of Lower Saxony Overview about Field Data Capture.

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Presentation transcript:

Dr. Carsten Schwarz Geological Survey of Lower Saxony Overview about Field Data Capture

Dr. Carsten Schwarz  Situation today  This Presentation will show  NLfB-staff is NOT using digital instruments for field work as standard tools  how we capture geological data in the field,  how geological informations are described in the field (raw data),  the way: raw data  processing and evaluation  mapping products (maps, models, reports)

Dr. Carsten Schwarz  Landscape and Geol. Situation in Lower Saxony  3 Major Types of Landscape  Low Mountains (up to 1000 m) Mesozoic and Paleozoic hardrocks  Lowlands Quaternary and Tertiary sediments (mainly softrock, peat )  Coastal Areas, Border Islands, North Sea Shelf Quaternary, mainly Holocene sediments (Tidal flat areas, marshlands, very soft material with intercalations of peat)

Dr. Carsten Schwarz  Equipment for Fieldwork  Drilling by hand  Auger drilling (... and other heavy equipment)  Vibrocorer (... and other special equipment)  Drilling platform Examples only!

Dr. Carsten Schwarz  Fieldwork (per map sheet 1 : 25,000)  Drillings by Hand (down to 2 m depth) Results: shallow borehole informations  Evaluation of Borehole Descriptions from archives, provided by internal and external sources Results: borehole descriptions  Auger Drillings (down to 50 m depth) Results: ca. 50 own auger drillings  Recording of Raw Data

Dr. Carsten Schwarz  Application of Raw Data  All describtions of geological material in NLfB are following one key  Software in „SEP3-format“ (Programm for the standarized describtion of geological layers and their lithology) (deth / stratigraphy / petrography (main; others) / genesis / colour / samples) Head informations of borehole Geological informations of borehole

Dr. Carsten Schwarz  Data Set in „SEP3 - format“ ... is base for all further working steps with different software.  NLfB is using the following software for processing the raw data: ArcInfo / ArcView GeODin GeoObject2 / Virgil (OpenGeo) MeMaS... other GIS - software

Dr. Carsten Schwarz  Resulting Products  Based on SEP - data the mentioned softwares are used as standard tools for the contructinon of Borehole Logs Maps Fenced Diagramms Profiles 3-D-Models

Dr. Carsten Schwarz  Summary  Reasons why we stopped our own testings with „field pc‘s“ - to heavy (esp. with extra battery packs) - weak protection against water, dust... - display to small - display not readable in sunny conditions - memory to small - fear for loss of data  Decision - no digital data capture yet - watch the market - participate from neighbours experiences