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Permanent equipment

Most of the runoff gauges on the Haute-Mentue catchment are operational beginning with 1996 and measurements are taken automatically at 5 minutes time step. Details about the type of weirs in the actual configuration can be found in Joerin (2000). All runoff gauges are equipped with a pressure transducer sonde for measuring the water level and with a recent HYDROMADD-R data acquisition system, from which the data is retrieved every 2 weeks on mobile memory cards. Appropriate rating curves have been used to transform the water level in discharge data and appropriate formulas are also used to transform counting of the pluviometers to rainfall intensities. These transforms have been done with the CODEAU-R computer program (EPFL-HYDRAM et al. (1996)) developed at HYDRAM Laboratory in order to handle hydro-meteorological data.

The meteorological data is collected at the meteorological station (Chalet du Villars) since 1998 at every 15 minutes and they are retrieved every 2 weeks on the same type of mobile memory as for the water level data. A network of five pluviometers (tipping-bucket rain gauges) is operating on the whole Haute-Mentue catchment in order to better capture the spatial variability of the precipitations.

The figure below shows the spatial distribution of the permanent equipment on the Haute-Mentue catchment.

 

Details about the hydrometric and the meteorological gauges available on the Haute-Mentue catchment for continuous measurements during 1975-2003 period are given below (more information about the equipment installed on this catchment can be obtained from Alex Amiguet and Bernard Sperandio):

Hydrometric stations

Years

Topografic references (m)

Altitude (m)

Type

Photo

Dommartin

1975

544'060/ 166'363

694

Double rectangular weir

 

Corbassière

1988

544'480/ 162'317

843

Double V weir

Corbamont

1990

544'504/ 161'205

863

Venturi flume

Bois-Vuacoz

1992

544'567/ 160'238

900

H-Flume

Esserts

1993

544'708/ 162'124

857

V-notch thin-plate weir

H-Flume (since 2002)

Ruzillon

1993

544'279/ 161'197

872

V-notch thin-plate weir

Chalet du Villars 1998 544'234 /161'846
863

Meteorological station

Etrelec

 

Chalet du Villars

Froideville

Villars Tiercelin

Chardonney

Chalet d'Orsoud

1987

1987

1987

1987

1995

544'234 /161'846

542'845/ 161'944

543'960/164'510

544'200/166'206

 

863

809

809

750

Tipping-bucket pluviometers

Etrelec

 

 

 

Temporary equipment

Beside the permanent instruments, several complementary equipments have been installed temporally during several intensive field campaigns. These concern:
- TDR (Time Domain Reflectometry) set-up for measuring and monitoring the soil moisture humidity at several depths along the hillslope on two geologically representative sites of the Corbassière catchment.
- ISCO water samplers used to collect stream water samples at several locations (Corbassière, Esserts, Ruzillon and Bois-Vuacoz outlets) further analyzed in the laboratory for different chemical species.
- shallow piezometers installed in autumn 2002 in order to test the hypothesis of possible superficial perched temporary water tables on the Ruzillon site.

 

Details about available set of instruments available on intensive field campaigns on the Corbassière catchment during 2001-2003 period are given below:

Temporary equipment

Periods

Sites

Produced by

Photo

ISCO sampler (3700 and 6712)

1990-2002

all catchment outlets;meteorological station

ISCO

 

ISCO - flow meter 4220

1990-2002

all catchment outlets; meteorological station

ISCO

 

TEKTRONIX -1502B- oscillloscope

1998-1999

2002-2004

Bois-Vuacoz; Ruzillon; Esserts

TEKTRONIX

 

CR10-Datalogger

CR21 - Datalogger

1998-1999

2002-2004

Bois-Vuacoz; Ruzillon; Esserts

Campbell Scientific

 

TDR probes

1998-1999

2002-2004

Bois-Vuacoz; Ruzillon; Esserts

Etrelec

Rainfall simulator

1998

Ruzillon site

HYDRAM (acording to Orstom rainfall simulator)

Salinomadd

since 2002 all catchment streams

Etrelec

 

GGUN-fluorimeter

1999 Bois-Vuacoz site Neuchâtel University

Geophysical set-up

since 2002 Ruzillon; Esserts sites Institute of Geophysics Lausanne  
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