TY - JOUR

T1 - Geophysics for urban mining and the first surveys in Denmark

T2 - rationale, field activity and preliminary results

AU - Sandrin, Alessandro

AU - Maricak, Aleksandar

AU - Heincke, Bjorn H.

AU - Clausen, Rune J.

AU - Nielsen, Lars

AU - Keiding, Jakob K.

PY - 2020

Y1 - 2020

N2 - Geophysical methods have been widely used in recent decades to investigate and monitor landfill sites for environmental purposes. With the advent of the circular economy, waste contained in old landfills may be considered a resource that can be developed. Since the content of old landfills is largely unknown, the occurrence and quantity of valuable materials must be investigated before embarking on any development activity. Two landfills on Sjaelland, Denmark (located at Hvalso and Avedore) were selected for a pilot study to characterise their content. At both locations, a set of geophysical surveys is underway. Here, we present the data obtained from magnetic and 2D seismic refraction surveys. Magnetic data show various anomalies that can be interpreted as caused by iron-rich waste. At both sites, the landfill material results in generally low P-wave velocity (550 m/s). We propose that seismic refraction can thus define the bottom of the landfill and possibly its internal structure, especially when combined with other methods.

AB - Geophysical methods have been widely used in recent decades to investigate and monitor landfill sites for environmental purposes. With the advent of the circular economy, waste contained in old landfills may be considered a resource that can be developed. Since the content of old landfills is largely unknown, the occurrence and quantity of valuable materials must be investigated before embarking on any development activity. Two landfills on Sjaelland, Denmark (located at Hvalso and Avedore) were selected for a pilot study to characterise their content. At both locations, a set of geophysical surveys is underway. Here, we present the data obtained from magnetic and 2D seismic refraction surveys. Magnetic data show various anomalies that can be interpreted as caused by iron-rich waste. At both sites, the landfill material results in generally low P-wave velocity (550 m/s). We propose that seismic refraction can thus define the bottom of the landfill and possibly its internal structure, especially when combined with other methods.

KW - geophysics

KW - urban mining

KW - circular economy

KW - landfill

KW - Denmark

KW - RESOURCE RECOVERY

KW - LANDFILL

KW - PARAMETERS

KW - REFRACTION

U2 - 10.34194/geusb.v44.5240

DO - 10.34194/geusb.v44.5240

M3 - Journal article

VL - 44

JO - GEUS Bulletin

JF - GEUS Bulletin

SN - 2597-2162

M1 - 5240

ER -