HYDROGRAPHICAL OBSERVATIONS ON SWEDISH LIGHTSHIPS

(1)

Det här verket har digitaliserats vid Göteborgs universitetsbibliotek och är fritt att använda. Alla tryckta texter är OCR-tolkade till maskinläsbar text. Det betyder att du kan söka och kopiera texten från dokumentet. Vissa äldre dokument med dåligt tryck kan vara svåra att OCR-tolka korrekt vilket medför att den OCR-tolkade texten kan innehålla fel och därför bör man visuellt jämföra med verkets bilder för att avgöra vad som är riktigt.

Th is work has been digitized at Gothenburg University Library and is free to use. All printed texts have been OCR-processed and converted to machine readable text. Th is means that you can search and copy text from the document. Some early printed books are hard to OCR-process correctly and the text may contain errors, so one should always visually compare it with the ima- ges to determine what is correct.

01234567891011121314151617181920212223242526272829 CM

(2)

FISHERY BOARD OF SWEDEN BORNÖ STATION Series Hydrography, Report No. 12

HYDROGRAPHICAL OBSERVATIONS ON SWEDISH LIGHTSHIPS

IN 1959

(3)

(4)

FISHERY BOARD OF SWEDEN

Series Hydrography, Report No. 12

HYDROGRAPHICAL OBSERVATIONS ON SWEDISH LIGHTSHIPS

IN 1959

(5)

Concerning the plan and the methods according to which the observations have been carried out it should be mentioned that:

All observations were made at 7 a.m.

GMT. From September, however, the monthly mean values of wind and current measurements in the Baltic are based on two more values every day. At Oscars- grundet and Fladen there are five more daily values beginning from April and finally from the same month there are three more values at Vinga.

The direction from which the wind comes is given in tens of degrees and the force is estimated according to Beaufort’s 12 degrees scale.

All measurements of the air tempera

ture were made using an air thermometer (graduated in half degrees of centrigrades) of the type used at second class meteor

ological stations.

The speed of the water current at the surface and near the bottom was measured by logging with a line, marked every 2 meters, attached to a float from which a current cross hangs at the depth in ques

tion. The length of the line payed out over the ship’s railing during 3 minutes was observed. In case of high current speeds the time for paying out 100 meters of line was recorded. The speed of the current is given in cm/sec. The direction from which the current comes was observed at the end of the measurement and is given in tens of degrees.

The water temperature is determined by a reversing thermometer connected to an unisolated water sampler, one depth at a time. At Fladen water samples were taken with the aid of an isolated water sampler provided with a non-reversing thermometer.

Water sampling for determination of salinity (S) was carried out in the Baltic and at Oscarsgrundet three times a month before September, and after that time six times a month. At Svinbådan, Vinga and Bornö station daily measurements of sali

nity were made. At Svinbådan, Vinga (the depths 0—15 m) and at Bornö station the salinity was determined with Pettersson’s gold chain areometer. On the light ships

the accuracy of this determination is

± 0.1 °/0„ S, while at Bornö station it is

± 0.05 °/o„ S. Three times a month samples were sent to the laboratory for control.

These samples were titrated for chloride with a normal accuracy of ± 0.02 °/M S.

Regularly such a titration was carried out on samples from Fladen (20—40 m) and Vinga (20—40 m). Sporadically the sali

nity of the Baltic samples was determined by titration but it was usually analysed conductometrically. The areometer deter

minations were carried out directly on the place, while the samples for the other analyses were sent to the laboratory in glass or polythene bottles. Glass bottles were regularly used at Vinga and occa

sionally at the Baltic light ships.

The handy polythene bottles used on other stations unfortunately evaporate water, mainly through the screw cap. Ex

periments with five bottles filled with sea water of 31.85 S showed the following increases of salinity during three months:

+0.03, +0.02, +0.05, +0.05 and —0.02.

Simultanous weighing showed a decrease in weight corresponding to the following increases of 70o S: +0.13, +0.05, +0.11, +0.11 and +0.03. The differences bet

ween these two series indicate other pro

cesses than only evaporation of water.

The errors are most serious for Fladen 20—40 m, where the requirements of accuracy is greater than the one obtained with the polythene bottles. For the rest of the measurements of high salinity the error may be tolerated. Later the poly

thene bottles have been furnished with rubber stoppers, and the weighing results show a maximum increase of the salinity of 0.02 °/oo S. For a Baltic water of 6.84 °/oo S the weighing series show the following result: +0.02, +0.02, +0.01, +0.01 and +0.02 °/oo S and are thereby apparently of smaller signification.

When determining the salinity by elec

tric conductivity the polythene bottles are put directly into a thermostated water bath with a temperature of 27° C. In the Wheatstone bridge, constructed by C.

Rooth and G. Ek, a helipot with 10 revo

lutions of 10 KQ covers half of the pos-

(6)

sible range. According to a principle very often used in modern salinometers one branch of the bridge consists of a measuring cell, put into a suitable salt water in the temperature bath. We use water of two different salinities, e. g.

about 10 °/oo S and about 25 Voo S. The measuring ranges are then 0—23 7« S and 0—50 / 00 S. The measuring cell contains about 0.6 ml and is in principle a pipette with a vacuum cover. Since such a small amount of water is sufficient all bottles are planned to be replaced by test tubes with rubber stoppers. For the lower range a carefully stored sea water is used for standardisation, which is not only carried out in the beginning of a series of measu

rements but also occasionally during the measurements. For the second range Copenhagen normal water is used for the same purpose.

From a few measurements a formula has been established between the salinity S (from chloride titration) and the rea

ding A. The method of least squares was used to evaluate an expression consisting of a linear mainpart and correction term.

For the lover range the linear formula is S = 12.080 A — 0.847 and for the higher range S = 27.964 A — 2.271. For lower salinities an investigation has been carried out on 171 samples from the Baltic, col

lected during a cruise with the research vessel ”Skagerak”. All samples were ti

trated; 57 of them by two persons. The double titration showed the standard de

viation of 0.020 °/.„ S when S <C 8 Voo and 0.028 for S 8 Then the difference between the salinities determined by ti

trations and by electric conductivity was computed and a second correction estima

ted from a graph. This correction is never higher than 0.03 700 S but is remarkably varying at 5—6 700 S. The standard de

viation for the difference between titrated and conductometric salinity was computed 0.013 7„„ S for S < 8 °/oo and 0.017 °/oo S for S )> 8 7„o. For 15 samples of salinity 7.4 7oo S the standard deviation, however, was only 0.004 7oo S.

In order to examine if the Baltic sea water deviates markedly from ocean wa

ter the following investigation has been carried out. Sea water from Biscay was diluted to different lower salinities (29 samples in the range 2—18 70o S). The salinities were determined by titration and conductometrically. If from the titra

ted salinities computed from the formula S = 0.03 +1.805 Cl we subtract the amount 0.03 (1—S/35) 7»o because the dilu

tion was made using destilled water, the differences between the two kinds of salinities provided with all mentioned corrections may have a meaning for ans

wering the question above. The result shows that the conductometric salinity is lower, about 0.02 70» S, in the range 10—16 7oo S, but 0.01 Voo S higher in the range 3—5 °/M S. In the range 5—10 °/oo S the difference is variable, eventually indi

cating that the constructed second correc

tion is less good here. As is known the amount of calcium is especially high in the southern Baltic proper and Kattegatt while it is low in the gulf of Bothnia. The above mentioned tendency corresponds roughly with these facts.

For high salinities not so many inve

stigations have been carried out. 12 samp

les with 34 70„ S were determined conduc

tometrically in polythene bottles with a standard deviation of 0.042 700 S, while 9 31 7oo S samples in glass test tubes only showed a standard deviation of 0.010 S.

46 samples of different high salinity in polythene bottles show a standard devia

tion of 0.035 7oo S.

All observations are listed in a monthly table, containing the following specifica

tions: direction and force of the wind, temperature of the air, direction and speed of the current at the surface and near the bottom, water temperature at the different depths as well as the salinity at the same depths.

Certain extreme values are underlined, e. g. the force of wind 7 or more, the minimum and maximum value of air tem

perature each month, the maximum value of current each month, the minimum and maximum value of the water temperature and salinity each month at each depth.

Göteborg, April 20, 1961

ARTUR SVANSSON.

(7)

Positioner för svenska observerande fyrskepp.

(8)

SYDOSTBROTTEN

Januari

z

O

CxL CO

töO

Q

>-

(9)

SYDOSTBROTTEN 63”19'N20°11'E Observatör:R.WELANDER1959

SYDOSTBROTTEN

April

E

E O-sJ-

œ

JCo

E OKl

KACO

ir\

G

"oi C

E

S3

HCO ir\

>o E

O CO

lT\

tTvE s

E

O 8

ir\

Vattnetstemperaturi°C

E

S

8*0

6*0

8*0

9*0

8*0

E

a 0.6 0.7 0.8 0.9 0.9 0.8

E

8 0.6 0.8 0.8 0.9 0.9 0.9

E

S 0.6 0.8 0.8 1.0 1.2 1.7

£

ir> 0.6 0.8 0.8 1.2 1.6 1.8

E

O 0.7 0.6 0.6 0.8 0.8 0.8 1.2 1.4 1.6 1.6 1.6 1.8 2.0

Strömfrån 0m40m ^E 13 20 13 6 0 0 0 6 0 8 6 9

2

KA CM 1 • 1 -*• i VO KA C0

r-H KA CM O KA rHCMH

1 11 17 18 16 0 0 0 8 6 0 6 9 12

2 36 09 32 23 32 34 16 18 18

'S—i temp,r

CM CM O OCOOVDliAt'-'OKACM^

C^OH r-IOrHCMKACMKAinifNin

Vind RikJn.Styrka in^-CM

to M « OOCMOITNKAOO C0 VOVDVO

KNOKA rHOCMCMCMrHrHHi-lr-l

iun_Da 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Z

6

(10)

SYDOSTBROTTEN

Maj

z

LU

I—•

O

cy

CQ

h-

OO

o

Q

>-

oo

7

(11)

SYDOSTBROTTEN

Juni

z

UJ o

t— Q£_UJ

i— ^co

O ^Xg

aa £ CO ^C^l^.

¥— C Ln ^■O

o

Q Q

>" O uo

E

!2

v/3 E

CM CM

CM 03 VO VO

CO KV K\ O CO -M- VO vo f- CO 00 CO 03 CO

CM CM KV O

OV OV OV OV OV OV (Tv OV O rH CM CM

irv| -*• oo o nvl H o rl

wnpQ

o o o> o îo^{OOOOOÔOO} ôoooootHoo

O O O CD C0 O CO OMÎOVOO-M-OVDO COVOOOOOCOVOIOO

col •<- o ^ ffl o 4 O t^-| ov to OV ov Ov ov o

O CM CM C- O O C0

OVKVrH Ov O'. C0 CJv O OV O

00 VO O O O

CM O rH CM CM O CM ^ « KV CM r-i VO

I VO 00 O VO 03 03 VO C0

vo 03 Ov O UV VO GO CT- O rS

(12)

SYDOSTBROTTEN

Juli

(13)

SYDOSTBROTTEN

Augusti

LU

Oo'

CÛ

tö

o

Q

>“

LO

10

(14)

SYDOSTBROTTEN

September

Oc/.

CQ

OQ

>- oo

lunjDQ

o| tn vo

-'p| CM KM ^ CO VO

CVI CM CM

CM O' M- LTV ITv f—

CO 00 O' CM CM I

CO P- p- CO cA| m in v

p- t*- p-

rH CM iTv œ co co

00 00 r- r-

»'fCMHMCMlACMvON CM (D ■} CM ITV CO CO O M) N t' O' CO VO CO O'O'IBCBCOO'O'q O' O' O' O' O' p- P- CO C^C^-P“

OOP-'J-VOCOOO o q tr\ p- O KM VD O VD

O O O CO lf\ O O

CMlTsCMCOOCO^vDO O' O OOMOCTvOOOO

lO VO CO CM ^ 't oj O' O' CD LTV CO MD O' CO

km tr> p-| co| •

CM CM CM C\J CMCO O' O H

11

(15)

SYDOSTBROTTEN

Oktober

Z uu

!— I—

Oo'

CO

tp

o

Q

>on

E

E VO CM

rH VD

0 ^vo ^VO ^VO ^VO ^UV ^VO

"5 E

£ »

5.93 CO

CJV

in 5.88 5.97 _vo ^ov₀₀

UV

o E

8

voCO CO

C- irv

C~- rH

VD s KV

C-

<a irv irv uv

o

> E CM

IT» oo

irv KV KV

rH t-

rH rH

VO

rH uv in irv in UV irv uv

E OJ KV UV uv

uv uv

irv irv UV UV UV uv

E CM VO

O irv irv KV rH u;

irv irv irv uv uv

E

U E ITv co VO co VO o co i-hJ 00 VO ao KV ti o CM

O CM CM* CM cO CM cvl CM ** KV CM CM KV KV CM **■ KV KV

_3 E m vn CM ■M- OT co. CO O CM rH

KV CM tr» KV irv UV H- KV KV M- * "*■ "

a E

a> E CM KV CM co CM 't UV

"oj CM * vO VO irv VO UV VO VO VO VO **■ HV

"5 E CO O oolCO CM O CM t- VO O CM VO VO H- co * VO ti KV

> rH irv vo 4^VO C" t- r— VO VO t- VO VO VD VD H-l VD

E CO 0-1 CO CM p- O ov CO CO VO CO ^1 VD VD

v°* vo ool

E- *- r- t- vo r- VO VO VO VD VO UV uv H-l

E CO n, .... -n ov co f- CO UV H- CM p- co VO hJ VO p-

VO VO VO vo ool

t— P- c— r- VO VO vo VO r- VO VD

J

E 1 irv O CO O VO 1—1 VO O s,\ o »

rH - O - o - - o O CO

rH CO OV o KV i—i rH

rH 8. O OV rH

°o Riktn S' 1 8 t P3 CM CO • » i -M-

rH CM O •M-

rH 1 CM 1 UV

o CM

KV i 1 CM

O CM KV KV

CM H t av

o O O 1

O

E

=0 t»- o VO - H rH - o co o OV

rH VO O O - O oo O o » s OJ O o OV irv

CM Kl^O

o

Riktn.I<

CMKV t O CM av

o CM irv OV

CM fH ■ irv CM 1

O OV

o 1 1 s ■ C—

CM 1 OV

O t CM

O CM

O O s t ov

O rH uv

O 1 O

à m VO CM H- O KV o CM vo co O O rH "* CM

3 b

V CD CO O a T- VO VO irv ** irv Ov t- P- UV VO VVJ rH pH 4

o ir »n m KV KV KV KV O KV CM KV CM + rH KV KV VD VD UV CO KV VO ool KV H- r—

■O £ o

>

Riktn.

ir 1 O s CM t- CM KV irv

o 1 VO r~-

o o £ o CM uv Ov CM vO

rH VO

O O O O VD

rH rH o irv o 3 ;—1 uv

O £ co o

uinpQ ~ trv - - VO - CO Ov O

?—i 1—! KV

rH rH rH VO r~- CO

rH CM s £ (M s CM CM coCM CM oKV KV z

(16)

SYDOSTBROTTEN

November

(17)

SYDOSTBROTTEN

December

(18)

FINNGRUNDET

Januari

(19)

FINNGRUNDET

April

(20)

61°04'N18°41'E Observatör:E.STEFANSSON,H.STENMARK1959

FINNGRUNDET

Maj

(21)

FINNGRUNDET

’ Juni

=>

0£

o

z

(22)

61°04'N18°41'E Observatör:E.STEFANSSON1959

FINNGRUNDET

Juli

(23)

FINNGRUNDET

Augusti

(24)

FINNGRUNDET

September

(25)

FINNGRUNDET

Oktober

(26)

61°04'N18°41'E NovemberObservatör:E.STEFANSSON1959

FINNGRUNDET

November

_cO

-5

0) 4=C O

>

E

R ^vo^av ^CM^CO

E OCM

CO CM

vo CO

irv m

E ITVH

av cm

VO CO

tcv irv

E

S ^av

cm

VO CO

irv uv

uvE av h

VO co

irv irv

E

O CO rH

VO co

U

Jj o oa E i?

’Sc

"5

>

E

O 8.6 7.8 7.8 7.5 7.6 7.5 6.7 6.8 6.4 6.1 6.0 ^CM

C-

E

OCM 8.6 7.8 7.8 7.5 7.6 7.5 6.7 6.8 6.4 6.1 6.0

r-

IflE

H 8.6 7.8 7.8 7.5 7.6 7.5 6.7 6.8 6.4 6.1 6.0 ^CM

t—

E

O ^ck coirv vo in r— co h o|

COI C— t'-f- t-r- vO VO VO vo vo| t—

E

irv 8^2 8.0 7.8 7.5 7.6 7.5 6.7 6.8 6.4 6.1 6.0 ^CM

C~

E

O 8.5 8.2 8.0 8.0 8.1 7.8 7.6 7.5 7.6 7.5 7.2 6.9 6.7 6.8 6.5 6.4 6.2 6.1 6.0 6.0 ^H

E O

"O

E

!2 to e

o

"e

4 13 7 6 7 8 2 6 0 2

il

8 10 0 3 4 3 8 8 7 O

1—1

i ²³ ³⁶ ¹⁸ ³² ³² ²⁷ ¹⁸ ²³ ²³ ¹⁸ ⁰⁹ ¹⁸ ⁰⁹ ⁰² ¹⁴ ³² ¹⁸ ¹⁸ ^UV

g

6 8 10 6 10 0 0 4 0 2 21 8 6 10 6 7 6 6 2 8 'J-

o

i ¹⁸ ³² ¹⁸ ³² ³⁶ ²⁰ ¹⁴ ¹⁸ ⁰⁵ ¹⁴ ³⁴ ⁰⁹ ²³ ¹⁸ ³² ¹⁸ ¹⁸ ^o

Q.

^ E—i _a> 8.2 7.0 8.0 7.4 4.6 3.8 2.9 4.0 5.6 7.6 7.4 7.2 6.4 5.6 5.4 1.9 -0.4 -2.6 0.2 4.0 6.2 6.0 1.8 3.4 2.0 4.0 6.0 5.6 4.6 5.4

Vind IRikfn.Styrka irvcMirvvoir>HCMHKVf-| vor<A-^-t'-|voirvir.CMr-tir> r-lirvincMt^-lirvf-lfcvirvcM

cocMpœvoMj^t-copvo uv av cof-irvirv-^-M-cooirvco

lUnjDQ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 z

(27)

FINNGRUNDET

December

LUo

ZID œ:

O

E

Orc\ P o O

tn MD MD

O

1ü 3=c

>O OE CM

. vû CM

CO o ©

tA MD «>

irv ? o Ç

lA MD* ^

OE rH

8 o ?

«A vo **

ITNE rH £ £

CO «

iA ^ ^

OE Ö . h- fe lT>°;

lA LT> If»

U

O

«a E _0)

"55 3=c

>O E

E

E S

03 CO O O O ^ V\

E 8

H MD CO O O O “ V\

if\E H UDC^O CM O œ| CO CO CO

^ •A -A lA| K-» K\ K”»

CM

OE i—1

^ vo-j-o O col co co co

* î Jl «Z -A tr-\| fc\ fC\

CM H-

in H -M- o ^ O CO CO °o c~;| CM

OE

^ -«■ CM -st- -*■ O -4- -4- O O O CO W CO CD H N

^ ^ ^ H- H- H- -*■ ^ i

E CO -O

=0E Co E

O 1

OK> O IA N CO O' O' LO O O LDLOIAf-OLALÛOj O

I ^•g ^{• g £ £ 3} ^So' ^' ^{^} ^{^}^{O 1}^{^ S S}

rHO

"e

0 ^ o -M- CO CM MD CO IA o O MMOfflO'-ttH rH

rH

1 * 2 1 f. CM CM CD O IA IA H CO lf> 1 rH O 1 « ^ îa\ CM 1 £ KN O O -H rH£ £ ® ^ r~- o

Luft- _CL

E -22

IOIANCMIAIaIiaIAIAIA OrHOOOrHOK>-M--M- -H-H-CMCM CMrHCMOOt^CM

1 1 i 1 1 1 1 1 1 1 »

o

Vind ¹

(CN IA hco| r-| r-| H t-f H œ| lokncmcmmHloHm^ H^'ûh'-acmlohhlcm

nfSNNIAIOlAIOOffl OO'f'O^'SÇ'î'f-tîS

^rHfH^irHrHrHrHrHrH f-iQKNKDCMrHCMrHCMrH CMCMrHiHrHKDOOOOrH

KD

rH

lunjDQ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20: 21 22 23 24 25 26 27 28 29 30 31 X

(28)

GRUNDKALLEN 60°34'N18°58'E Januari Observatör:E.A.ALM,V.ÅKERLÖF1959

GRUNDKALLEN

Januari

o

c

"55 3c=

s

£

§

lf\ <Tl r-i

vo vo r-

E

» ^rt^vo_in ^vo_tn^ro ^rH_irv

E

O vo SS

E

iHITN 5.61 5.68 5.68

E OH

CM CO CQ

VO vo VD

E

in <-j co co

vo vo vo

ir\ irv m

E

O CM co co

VO VO VO

irv urv irv

Vattnetstemperaturi°C

E

£

O 3.2 3.0 2.2 2.3 2.0 1.9 1.6 1.0 0.9 0.7 1.0 ^co

E

R ³^.0 ²^.8 ²^.2 ²^.2 ²^.0 ²^.0 1.6 1.0 0.8 0.4 0.8 ^r-rH

E

8 3.0 2.8 2.2 2.2 1.8 2.0

i

.5 1.0 0.8 0.6 0.6 ^r-

E

irvrt ²^.8 ²^.6 ²^.0 ²^.2 ¹^.8 ¹^.9 ¹^.5 ⁰^.9 ⁰^.8 ⁰^.6 0.6 ^VO

E

O 2.8 2.6 2.0 2.2 1.6 1.9 1.5 0.8 0.8 0.6 0.6 ^VO

rH

E

2.6 2.6 1.8 2.2 1.6 1.9 1.5 0.8 0.8 0.6 0.7 ^VO

rH

E

O 2.6 2.4 2.6 2.3 1.8 1.8 2.0 1.8 1.6 1.6 1.9 1.5 0.9 0.6 0.9 0.6 0.4 0.6 0.6 0.8 0.2 -0.2 ^KV

rH

Strömfrån 0m30m "I 9 9 6 3 4 8 11 4 8 6 12 16 6 4 7 4 6 4 4 7 6

O

i ¹⁶ ²⁷ ¹⁸ ³² ⁰⁹ ¹⁸ ¹⁶ ¹⁴ ⁰⁹ ²⁷ ⁰⁵ ³² ³⁶ ²⁷ ¹⁴ ⁰⁵ ²⁹ ³⁶ ³⁶ ⁰⁹ ³⁴ ^ITV^O

g

f-iO'*-'*-voav*<Hvo<ngo o oo vo cviKivor-- r— co co n-

rH| rH KV

O

i ¹⁶ ²⁷ ¹⁸ ³² ¹⁴ ¹⁸ ¹⁶ ¹⁴ ⁰⁹ ²⁷ ⁰² ²⁷ ³⁶ ³⁶ ¹⁴ ³⁶ ²⁹ ³⁶ ³⁶ ⁰⁹ ³⁴ ^O

al Q.

3 ! oooo|oooirvoirv irvoooovrvoooirv ooirvir\|ooirvinin

0 f h «1 f ^ f v y -,oVcrT^t-rrt f V ï 7 ? - f f H

Cvl

Vind Rikfn.Styrka tOsfrtNHt'l'trl'tK' C0| <M CM KV f-| CM l!V KV -t H KVCVJ tA œ| >t CM CM iH

«♦ov^-inovrtirvcMirvH HvtNvû'f'fW’fO'Oi ovvovocmh-h-cuc-cm rH CVJ iH CM Cvl rH CVI Kl O rH rHiHOK^r^KllOtCVCMO 0«rvHKVKVKVKACMKV

en O

voKV

tunpQ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 Z

(29)

GRUNDKALLEN

April

ZUJ

<

QZ

=5

£.C

O

(30)

GRUNDKALLEN 60°34'N18°58'E Observatör;ERIKA.ALMV.AKERLÖF,1959

GRUNDKALLEN

Maj

(31)

GRUNDKALLEN 60"34'N18"58'E juniObservatör:V.ÅKERLÖF,ERIKA.ALM1959

GRUNDKALLEN

Juni

(32)

GRUNDKALLEN 60°34'N18°58'E Observatör:E.A.ALM,VÅKERLÖF1959

GRUNDKALLEN

Juli

(33)

GRUNDKALLEN

Augusti

z

uu

__ i __ i

<

Q

Ö£

O