Table 1. Activities of ²³⁸U, ²³²Th, and ⁴⁰K radionuclides from Chavara –Neendakara Coastal belt (HBRA).

No	Sample Code	SamplingSite	Geographical coordinates		Activity(Bq kg−1)			Absorbed Dose rate (D)(nGy h−1)	Observed by Scintillometer(nGy h−1)
			Latitude	Longitude	238 U	232Th	40 K
1	CH-1	Chavara(Near St.Francis Assissi Church) Karithura	8°58′17.74′′N	76°31′39.45′′E	2929	13592	276	9717	9000
2	CH-2		8°58′16.00′′N	76°31′39.98′′E	5786	36229	2531	25114	18000
3	CH-3		8°58′15.05′′N	76°31′40.48′′E	3985	20862	1563	14745	16000
4	CH-4		8°58′14.82′′N	76°31′40.90′′E	3560	17999	1319	12772	12000
5	CH-5		8°58′13.70′′N	76°31′41.20′′E	2097	10037	628	7165	8000
6	CH-6		8°58′12.83′′N	76°31′41.41′′E	336	2071	274	1443	2000
7	CH-7	Chavara(Near IRE Building)	8°58′12.12′′N	76°31′41.62′′E	1930	15026	1385	10230	9000
8	CH-8		8°58′11.25′′N	76°31′41.65′′E	399	1839	222	1324	1000
9	CH-9		8°58′10.22′′N	76°31′41.82′′E	4448	29135	2230	20117	17000
10	CH-10		8°58′9.59′′N	76°31′42.55′′E	213	12013	1060	7609	8000
11	CH-11		8°58′6.98′′N	76°31′42.20′′E	2853	15324	454	10769	10000
12	CH-12	Puthenthura	8°57′57.63′′N	76°31′44.34′′E	1423	6629	915	4770	5000
13	CH-13		8°57′56.84′′N	76°31′44.63′′E	1365	6618	1040	4744	5000
14	CH-14		8°57′56.14′′N	76°31′44.99′′E	1854	9594	968	6801	8000
15	CH-15		8°57′47.45′′N	76°31′47.62′′E	1723	8319	1006	5953	5000
16	CH-16		8°57′46.46′′N	76°31′47.93′′E	6023	41280	2503	28356	21000
17	CH-17	Neendakara	8°57′45.77′′N	76°31′48.48′′E	639	3366	841	2403	3000
18	CH-18		8°56′53.26′′N	76°32′5.73′′E	1632	8480	995	6014	7000
19	CH-19		8°56′49.65′′N	76°32′6.63′′E	1560	7618	990	5447	7000
20	A-1 to A-10	Alleppey (Arabian Sea Coast)	9°29′28.06′′N	76°19′5.18′′E	37	56	BDL*	50	100
21	C-1 to C-10	Chennai (Bay of Bengal Coast)	13°3′18.55′′N	80°17′4.18′′E	BDL*	BDL*	446	19	100

^*Below Detection Limit.