Degassing at the Volcanic/Geothermal System of Kos (Greece): Geochemical Characterization of the Released Gases and CO₂ Output Estimation

Table 1

Coordinates and analytical results of the collected gas samples.

No.	Sample	Sector	Coordinates		Date	He	H2	O2	N2	CH4	CO2	H2S		^4He/^20Ne	δ^13C-CO2	δ^13C-CH4	δ^2H-CH4
			E	N	dd-mm-yy	μmol/mol									‰ vs. V-PDB		‰ vs. V-SMOW-
1	Therma	35S	528211	4077679	14-04-10	<3	<2	1700	13100	70	958000	n.d.	n.d.	n.d.	n.d.	n.d.	n.d.
2	Therma	35S	528211	4077679	05-09-10	27	<2	660	44700	290	930000	n.d.	n.d.	n.d.	-3.35	2.8	n.d.
3	Therma	35S	528211	4077679	19-03-14	2.43	<2	1100	8900	50	995000	<5	1.04	2.92	-3.11	n.d.	n.d.
4	Therma	35S	528211	4077679	29-09-16	2.5	<2	530	9300	64	989000	<5	1.44	40.6	-3.46	2.4	36
5	Therma	35S	528211	4077679	26-07-17	7	1.6	1800	19100	110	982000	<5	1.39	23.0	-1.12	n.d.	n.d.
6	Therma	35S	528211	4077679	14-10-17	16	<2	2000	33100	210	949000	<5	1.49	30.5	-3.28	n.d.	n.d.
7	Therma	35S	528211	4077679	27-08-18	9.2	<2	1300	23800	160	958000	n.d.	1.45	55.7	-2.50	n.d.	n.d.
8	Therma Sea	35S	528211	4077679	29-09-16	16	<2	2500	42400	280	955000	<5	1.55	44.1	-3.04	n.d.	n.d.
9	Paradise	35S	500794	4068393	07-09-09	17	<2	3200	10800	11300	953000	n.d.	6.60	25.6	-1.06	n.d.	n.d.
10	Paradise	35S	500794	4068393	03-09-10	12	<2	790	3600	9300	966000	n.d.	6.59	43.9	-0.60	-19.8	n.d.
11	Paradise	35S	500794	4068393	13-09-11	14	2	190	4100	9700	986000	n.d.	6.66	27.8	-0.98	n.d.	n.d.
12	Paradise	35S	500794	4068393	20-08-12	28	<2	14700	34400	20900	900000	n.d.	6.67	34.1	-0.33	n.d.	n.d.
13	Paradise	35S	500794	4068393	13-06-13	12	<2	<100	3400	10000	968000	n.d.	6.70	112	-0.94	n.d.	n.d.
14	Paradise	35S	500794	4068393	20-03-14	23	<2	8400	19600	19200	937000	<5	6.55	49.0	-0.76	-19.5	n.d.
15	Paradise	35S	500794	4068393	27-09-15	14	<2	3100	8600	12100	959000	<5	6.49	223	-0.11	-19.5	-136
16	Paradise	35S	500794	4068393	29-09-16	12	<2	1700	5800	10000	980000	<5	6.27	270	-0.92	-20.1	-122
17	Paradise	35S	500794	4068393	30-09-16	17	<2	1800	8800	12100	972000	<5	n.d.	n.d.	-1.06	-20.0	-126
18	Paradise	35S	500794	4068393	30-09-16	16	<2	2200	7300	11000	977000	<5	n.d.	n.d.	-0.87	-20.6	-133
19	Paradise	35S	500794	4068393	30-09-16	12	<2	800	4100	9700	987000	<5	n.d.	n.d.	-1.82	n.d.	n.d.
20	Paradise	35S	500794	4068393	26-07-17	14	9	13300	46900	10800	915000	<5	6.71	90.7	-1.04	n.d.	n.d.
21	Paradise	35S	500794	4068393	14-10-17	21	2.2	6700	23200	15700	931000	<5	6.53	269	-0.67	-20.1	-124
22	Kokkino Nero	35S	521902	4078954	05-09-10	<3	<2	50	12300	520	966000	n.d.	n.d.	n.d.	-3.13	-21.5	n.d.
23	Kokkino Nero	35S	521902	4078954	19-03-14	5	3.1	3200	13600	3000	978000	<5	2.39	12.78	-1.94	-18.3	n.d.
24	Kokkino Nero	35S	522116	4078886	19-03-14	4.3	30	2700	8300	3100	991000	<5	n.d.	n.d.	n.d.	n.d.	n.d.
25	Kokkino Nero	35S	522116	4078886	29-09-15	5	<2	120	7200	3200	974000	36	n.d.	n.d.	-1.46	-19.5	-143
26	Kokkino Nero	35S	522116	4078886	29-09-16	6	<2	150	10500	3600	994000	<5	n.d.	n.d.	-1.43	-20.0	-104
27	Kokkino Nero	35S	522116	4078886	26-07-17	7	<2	1200	22600	3600	969000	<5	n.d.	n.d.	-1.70	n.d.	n.d.
28	Kokkino Nero	35S	522116	4078886	15-10-17	5	<2	1500	14500	3000	967800	<5	2.48	3.99	-1.48	-21.1	-92
29	Kokkino Nero	35S	521911	4075842	19-03-14	3.3	295	3500	24400	2400	980000	673	n.d.	n.d.	-0.97	-18.2	n.d.
30	Kokkino Nero	35S	521911	4075842	29-09-15	4	2.3	530	4000	2700	972000	2700	n.d.	n.d.	-2.09	n.d.	n.d.
31	Kefalos	35S	497339	4065831	28-09-15	24	15	3700	33000	25700	906000	<5	5.60	92.9	-0.59	-9.9	-71
32	Kefalos	35S	497339	4065831	29-09-16	18	27	3294	25100	23900	946000	<5	6.21	92.8	0.64	-12.2	-54
33	Kefalos	35S	497339	4065831	14-10-17	18	95	5800	35300	24200	902000	<5	6.01	192	-0.68	-12.4	-66
34	Agia Irini	35S	520916	4075676	28-09-15	0.94	<2	2600	6600	40	970000	15	0.85	5.86	-2.52	n.d.	n.d.
35	Agia Irini	35S	520916	4075676	30-09-16	0.34	<2	6219	14600	42	968000	<5	2.19	1.35	-2.24	n.d.	n.d.
36	Agia Irini	35S	520916	4075676	16-10-17	0.90	<2	9500	26800	97	956000	<5	1.57	0.61	-2.11	n.d.	n.d.
37	Agia Irini spring	35S	520916	4075676	16-10-17	<3	<2	8900	36000	330	947000	<5	n.d.	n.d.	-3.21	n.d.	n.d.
38	Agia Irini 2	35S	521910	4075843	28-09-15	412	<2	2000	613000	117000	256000	<5	3.67	81.5	-0.82	-16.1	-75
39	Agia Irini 2	35S	521910	4075843	30-09-16	446	<2	2200	989000	6200	900	<5	3.88	48.2	-20.1	-12.4	-14
40	Agia Irini 2	35S	521910	4075843	16-10-17	220	<2	2600	343000	82900	548000	<5	3.62	66.2	-1.52	n.d.	n.d.
41	Volcania	35S	499783	4068858	27-09-15	36	65	810	30500	20600	926000	62	n.d.	n.d.	-0.43	-14.0	-115
42	Volcania	35S	499783	4068858	27-09-15	44	49	340	12400	23500	943000	1200	n.d.	n.d.	-0.55	-19.0	-132
43	Volcania	35S	499783	4068858	27-09-15	44	2.9	310	4000	23100	947000	851	6.71	1066	-0.50	-18.0	-128
44	Volcania	35S	499783	4068858	20-03-14	34	1980	10100	75400	21000	877000	54	n.d.	n.d.	0.25	n.d.	n.d.
45	Volcania	35S	499783	4068858	16-10-17	19	26	13000	74800	14500	882000	<5	5.73	8.94	-0.51	-14.1	-110

n.d.: not determined.