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Posts Tagged ‘Lómur’

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Iceland’s electricity is produced almost entirely from renewable energy sources: hydroelectric (70%) and geothermal (30%). Less than 0.2% of electricity generated came from fossil fuels (in this case, fuel oil). In 2012 there was no wind power installed in Iceland. Electricity production increased by 24 MWh/person from 2005 to 2008, an increase of 83%.
According to Statistics Iceland the total electricity consumption was 7,958 GWh in 2002, 11,480 GWh in 2007, and 17,068 GWh in 2012. The aluminum industry in Iceland used 71% of produced electricity in 2011.
The electricity supply and consumption were equal in 2008: 53.1 MWh per inhabitant when the European union (EU15) average was 7.4 MWh. Iceland’s consumption of electricity was seven times higher than EU 15 average in 2008. The domestic electricity supply promotes use of electricity.
The Icelandic electricity market is geographically isolated. The market was closed for competition prior to 1 July 2003. Almost all electricity was supplied by Landsvirkjun and sold through regional distribution companies. Landsvirkjun had a monopoly position on investment in generation. Full market opening began in 2006 e.g. with the opportunity to switch supplier. Contracts for large scale energy users were in general long term, up to 30 years with options for extension.
Landsvirkjun, the largest electricity producer, had 76% annual production in 2007.The majority of the electricity is used in industry, mainly aluminium smelters and producers of ferroalloy. Landsvirkjun does not participate directly in the retail market for households and smaller businesses. In the retail market the main companies are RARIK, Orkuveita Reykjavíkur and Hitaveita Suðurnesja.The last two have also entered into the market for energy intensive users. The households heated with electricity, not many, receive subsidies to make their heating costs comparable to hot water heating. (Wikipedia) .
The following recording was recorded at Skóey island in Hornarfjörður fjord under a powerline “Byggðalína”. It is a 132kV powerline which connects all the regional and local electrical grids together and stabilizes the whole electrical grid in Iceland. The structure is in most parts over thirty years old and for the last several years it has been quite overloaded.
The recording was in 24bit/48Khz. Behind the aggressive electrical sound is a typical calm, quiet wetland soundscape with rumbling background noise from the ocean shore not far away and traffic.
When the recording is inspected in specrogram it shows the sparks fill the whole frequency spectrum of noise, or up to 24Khz (see picture). It would have been interesting to record this sparking sound at 192kHz because the whole microphone frequency range is up to 50Khz. That is not all, because the air is massively loaded with EMF/radiowaves, from 50Hz up to several hundred kHz. The strong radio signals travel long distances and make it almost impossible to record clean spaceweather signals with VLF receiver without human electrical noise pollution.

(mp3 256kbps / 55Mb)

Recorder: Sound devices MixPre6
Mics: Sennheiser MKH8020/8040 (Parallel AB40)
Pix: Canon Eos M

Location: 64.311677, -15.322010
Weather: Calm, Cloudy, drizzle rain. Temp: ca. 9°C

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I have published many times recordings from the Nature Reserve Flói in southwest Iceland, so I will not introduce that area again.
During the years I remember couple of times when curious sheeps have disturbed the recording. This is one of them.
This peace is a 30 minutes of nine hour overnight recording. It was recorded between 7 and 8 o´clock in the morning 25th of July 2015.
The recording is not only disturbed by the sheeps, it is also highly disturbed by tourist traffic, especially in the air. Jets are arriving and leaving the country and smaller planes in sightseeing so this peaceful area is not especially quite this time.
Quality open headphones are recommended while listening at medium level.

(256kbps / 57,2Mb)

Recorder: Sound devices 788
Mics: RodeNT1 (NOS) & MKH20 (AB40) as close together as possible
Pix: Canon EOSM
Location: 63.901026, -21.192189
Weather: Calm, cloudy, around 11°C

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I think I don‘t need to present the nature reserve in Flói in many words. It is a wetland / moors in south of Iceland. I have already published in this blog several hours of „Flói recordings“.
Last spring was cold, wet and windy so I did not spend much time there. But in June, I stayed there for two nights while I recorded several hours of recordings during the nights.
As usual I fell in to sleep in the field during that time, so I did not know what I was recording. Last week when I was searching trough the recordings, I noticed some interesting moments.
At 14th of June the overnight weather forecast was nice and I started to record at midnight. Between 2 and 5 in the morning the wind went down so the field got „quieter“ for far distance sound waves.
I put up Rode NT1 in NOS in the same place as usual and pointed them to north. The soundscape is always spectacular in this place.
This soundscape is probably not what everyone would hear by bear ears. The recording is highly amplified. In this circumstances and Rode NT1, I normally adjust the gain on the recorder between 54-58dB. In this particular recording the gain is increased again in post about +24 dB so the peak level in one moment (at 13:16) reach 0dBf.
Many bird species are audible in this recording like Red throat Diver, Common Snipe, Golden Plover, Dunlin, Whimbrel, Gull, Arctic Tern, Northern Wheatear, Greylag Goose, Whooper Svan, Meadow Pipit and other bird species I have forgotten, or can’t name. Other audible animals like horses and sheep’s are there too.
Background noise is mostly from the Atlantic ocean’s waves along the south coast behind the mics. Then as usual, traffic noise and sometimes a party music somewhere in the county.
Quality open headphones are recommended while listening at low to mid level, or in speakers at low level.

Flói 2015. 1. Hluti

Hér er á ferðinni upptaka úr friðlandinu í Flóa frá því á laugardagskvöldi og sunnudagsmorgni 14. júní 2015. Eins og fyrri upptökur úr Flóa sem finna má hér á síðunni eru hljóðnemarnir ávallt staðsettir á sama stað við sömu tjörn norðan við fuglaskoðunarhúsið.
Í upptökunni má heyra í ýmsum fuglategundum. Má þar nefna lóm, hrossagauk, heiðlóu, lóuþræl, spóa, máfa, kríu, steindepli, grágæs, álft og þúfutitling. Þá heyrist lika í hestum og kindum.
Bakgrunnssuð er einkum brim meðfram Suðurströndinni og einkum við Ölfusárósa. Svo berst hávaði frá bílum og partítónlist einhvers staðar í sveitinni.
Mælt er með því að hlusta á upptökuna í góðum opnum heyrnartólum og á miðlungs- lágum hljóðstyrk.

Download mp3 file (256kbps / 60,7Mb)

Recorder: Sound devices 788
Mics. Rode NT1 (NOS)
Pix. Canon EOS M
Weather: clear sky, mostly calm, between -1 to 4°C
Time: 14 June 2015, between 2 and 3 o’clock
Location: 63.900933, -21.191876

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Last autumn and winter I published some of my recordings from 25th of June 2012 in the nature reserve at Flói in the south of Iceland.
Day after, during the night and early morning at 26th I continued to record, but now I moved the microphones about 3-5 meter closer to nearby pond.
Something happened. There was a strange echo or reverb in some directions. It sounded strange because this area is very flat. But afterwards I thought it came from a ridge about 50cm high along the pond. This echo was sometimes very nice so it is worth to continue to put this recordings from Flói on the web, maybe in 2 to 4 parts.
I skip the first two hours of this night recording, mostly because of a high noise from the surf along the coast site, 3-4 km behind the microphones and some truck traffic 7 -14 km front of the microphones.
As usual this recording are made in virtually quiet environment. It starts around 1 am and lasts for 25 minutes. It is mostly very quiet, but in the end a choir of Red throated Diver gets very loud.

Friðlandið i Flóa 2012, 5. hluti

Síðastliðið haust og í vetur setti ég nokkrar upptökur úr friðlandinu í Flóa á vefinn. Voru það upptökur sem ég tók upp nóttina 25. júni 2012 .
Daginn eftir tók ég líka upp svo til á sama stað en færði hljóðnemana örlítið úr stað. Við það gerðist það undraverða að fuglar úr vissum áttum hljómuðu í einhverju bergmáli. Það er frekar óskiljanlegt nema að bakkar umhverfis nærliggjandi tjörn eru frekar brattir og u.þ.b. 50cm háir.
Það er því vel þess virði að halda áfram að setja á netið hljóðmyndir úr Flóanum.
Hér má heyra í fuglum s.s. óðinshana, hrossagauk, stelk, lómi, spóa, kríu, hettumáfi, músarindli og maríuerlu sem og mörgum öðrum fuglum. Bakgrunnssuð er helst frá briminu með suðuröndinni u.þ.b. 3-5 km fjarlægð fyrir aftan hljóðnemana og svo trukkaumferð eftir þjóðvegi nr.1 í 7-14 km fjarlægð. Upptakan er líklega frá því milli kl. 1 og 2 eftir miðnætti.

Download mp3 file (35Mb / 192kbps)

Recorder: Sound devices 744T
Mics: Rode NT1a (NOS)
Pics: Canon 30D (see more pictures)
Older post from nature reserve in Flói 2012

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